| 单词 | periodic |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔Christmas club〕A savings account, as in a bank, requiring periodic deposits to ensure money for shopping at Christmas.圣诞储蓄：一种银行存折，为圣诞购物而准备的定期储蓄美国传统〔Fourier analysis〕The approximation of a function through the application of a Fourier series to periodic data.傅立叶分析：利用傅立叶级数来分析已知周期数据从而得到函数的近似值美国传统〔REM〕The rapid, periodic, jerky movement of the eyes during certain stages of the sleep cycle when dreaming takes place.眼球速动期：快速的，周期性的，在睡眠周期的某个时期做梦时发生的痉挛性的眼睛的运动美国传统〔SOMETIMES〕Periodic failures of the olive crop kept the country in constant debt. 橄榄周期性歉收使得国家常年负债。朗文写作活用〔SOMETIMES〕She suffered periodic bouts of depression. 她患了定期发作的抑郁症。朗文写作活用〔SOMETIMES〕The budget is subject to periodic review. 预算须定期审查。朗文写作活用〔alignment〕A set of gears needs periodic alignment.一组需要定时调整的齿轮美国传统〔amplitude〕The maximum absolute value of a periodic curve measured along its vertical axis.振幅：沿垂直轴摆动的周期性曲线的最大绝对值美国传统〔aperiodic〕Physics Without periodic vibrations.【物理学】 非周期的美国传统〔assize〕One of the periodic court sessions formerly held in each of the counties of England and Wales for the trial of civil or criminal cases.巡回审判（庭）：以前在英格兰和威尔士各郡，审判民事或刑事案件时的一种不定时开庭期的巡回审判庭美国传统〔balloon mortgage〕A mortgage with periodic payments that are insufficient to pay back a note, thereby requiring a large final payment.增值抵押：一种不足以偿还票据的定期付款抵押，因此最后需要一大笔支付金额美国传统〔beating〕Physics The periodic variation in amplitude of a wave produced by the superposition of two waves of different frequencies.【物理学】 波震动：由两种不同频率的波叠加在一起而产生的波在某一区域内的周期振动美国传统〔bout〕He suffered from periodic bouts of insanity.他得过阵发性精神错乱。剑桥高阶〔census〕An official, usually periodic enumeration of a population, often including the collection of related demographic information.人口普查：一种官方的通常是阶段性的人口统计详表，通常包括大量相关的人口统计信息美国传统〔circuit〕The area or district thus covered, especially a territory under the jurisdiction of a judge in which periodic court sessions are held.法庭巡回区：划定的地区或区域，特指在由法官裁决的周期性开庭的地区美国传统〔cluck〕She made periodic clucks of disapproval.她不时地发出啧啧声, 表示不赞成。外研社新世纪〔consummation〕Periodic reports for periods ending prior to the consummation of the merger should be filed as they become due.兼并结束前的期末定期报告到期应归档。外研社新世纪〔coupon〕A detachable slip calling for periodic payments, as for merchandise bought on an installment plan.分期付款联票：要求分期付款的可分离纸条，为付给以分期付款计划买来的东西美国传统〔dipsomania〕An insatiable, often periodic craving for alcoholic beverages.间发性酒狂，酗酒狂：难以控制、往往周期性的对酒精饮料的渴望美国传统〔dollar cost averaging〕Periodic investment of a fixed dollar amount.定额美元的定期投资美国传统〔fade〕A periodic reduction in the received strength of a radio transmission.周期性的衰减：在无线电的传送过程中，接收能力的周期性减弱美国传统〔family〕Chemistry A vertical column in the periodic table of elements.【化学】 族：周期表中的纵行美国传统〔feast〕A periodic religious festival commemorating an event or honoring a god or saint.祝典：为纪念某一事件，敬神或圣人的定期的宗教节日美国传统〔frequency〕The number of complete cycles of a periodic process occurring per unit time.次数：单位时间内周期过程中发生的次数美国传统〔frequency〕The number of repetitions of a complete sequence of values of a periodic function per unit variation of an independent variable.频率：当自变量变化一个单位时，周期函数取同一完整数序的重复次数美国传统〔fundamental〕Of or relating to the component of lowest frequency of a periodic wave or quantity.基波的：周期波或周期量的最低频率的分力的或与此有关的美国传统〔gamma-ray astronomy〕Astronomy that deals with the origin and nature of periodic gamma-ray emissions from extraterrestrial sources.伽马射线天文学：研究来自地球以外来源的定期伽马射线放射的起源和本质的天文学分支美国传统〔group〕A column in the periodic table of the elements.属，族：元素周期表上的一栏美国传统〔homology〕The relation of the elements of a periodic family or group.同周期：同一周期族或组的元素的关系美国传统〔hunting〕Electronics The periodic variation in speed of a synchronous motor with respect to the current.【电子学】 （同步电动机的）速度偏差：同步电机运行速度的周期性变化美国传统〔insanity〕He suffered from periodic bouts of insanity.他患有周期性精神失常。剑桥高阶〔insurance〕The periodic premium paid for this coverage.保费用：为此种保险定期支付的保费用美国传统〔inventory〕A detailed, itemized list, report, or record of things in one's possession, especially a periodic survey of all goods and materials in stock.财产目录：个人财产中物品的详细的、逐条登录的目录、报告或记录，特指对所存的全部货物和材料所做的阶段性的统计美国传统〔learn〕Your homework is to learn the periodic table.你的家庭作业就是熟记元素周期表。麦克米伦高阶〔logbook〕A record book with periodic entries.有定期条目的记录美国传统〔maintenance〕These fences are fairly rugged but they require periodic maintenance.这些篱笆比较粗糙，不过也需要定期养护。牛津搭配〔node〕Physics A point or region of virtually zero amplitude in a periodic system.【物理学】 波节：在一周期体系中实为零振幅的点或区域美国传统〔nutation〕Astronomy A small periodic motion of the celestial pole of Earth with respect to the pole of the ecliptic.【天文学】 章动：地球天极就黄道极而言的小的周期性转动美国传统〔periodical〕Periodic.周期性的美国传统〔periodicity〕The position of an element in the periodic table.元素在周期表中的位置美国传统〔periodicity〕The tendency of chemical elements with similar positions in the periodic table to have similar properties.周期律：化学元素在周期表中有相似位置时具有相似特性的趋势美国传统〔periodic〕Periodic checks are carried out on the equipment.设备定期进行检查。牛津高阶〔periodic〕Periodic checks are taken to ensure that high standards are maintained.定期检查以确保维持高水准。柯林斯高阶〔periodic〕Periodic checks are taken to ensure that high standards are maintained.通过实行定期检查来确保维持高标准。外研社新世纪〔periodic〕Characterized by periodic sentences.完句的：以循环句子为特征的美国传统〔periodic〕Despite a UN peace plan, periodic fighting continues.尽管有联合国的和平计划，战争仍然时有发生。麦克米伦高阶〔periodic〕He suffers periodic mental breakdowns.他周期性地精神失常。剑桥高阶〔periodic〕He takes the car in for periodic oil changes.他定期把汽车送去更换机油。韦氏高阶〔periodic〕The bank agreed to make periodic payments to the construction company.银行同意定期付款给建筑公司。外研社新世纪〔periodic〕The committee has to prepare periodic progress reports.该委员会必须准备阶段进度报告。麦克米伦高阶〔periodic〕The house was comfortable; they didn't want to be periodic.这屋子很舒适,他们打算长住。英汉大词典〔periodic〕The modifications are in keeping with the periodic features of the home.这些改造与房屋的历史风格一致。外研社新世纪〔period〕Chemistry A sequence of elements arranged in order of increasing atomic number and forming one of the horizontal rows in the periodic table.【化学】 元素周期：一系列元素按原子序数升序排列形成的周期表中的一个横排美国传统〔phase〕A particular stage in a periodic process or phenomenon.相，周相：周期性的过程或现象中的特殊阶段美国传统〔phenology〕The relationship between a periodic biological phenomenon and climatic conditions.物候关系：周期性的生物现象与气候条件之间的联系美国传统〔phenology〕The scientific study of periodic biological phenomena, such as flowering, breeding, and migration, in relation to climatic conditions.物候学，物候现象：研究与气候条件有关的周期性生物现象的科学，如开花、繁殖和迁移美国传统〔pulsate〕These verbs mean to exhibit recurrent rhythmical movements of or like those involved in the periodic expansion and contraction of the heart.这些动词的意思是表现类似心脏周期性扩张和收缩的重复有节奏的运动。美国传统〔pulsejet〕A jet engine in which air intake and combustion occur intermittently, producing rapid periodic bursts of thrusts.间歇喷气机：一种间歇性地进行气体吸入和燃烧并产生迅速的周期性猛推力的喷气式发动机美国传统〔quality control〕A system for ensuring the maintenance of proper standards in manufactured goods, especially by periodic random inspection of the product.质量控制：一种用来确保生产出的产品保持合乎规定水平的系统，尤指通过定期对产品进行随意的检查美国传统〔review〕These arrangements are subject to periodic reviews.这几项安排每隔一定时间须予检查。英汉大词典〔revolve〕To recur in cycles or at periodic intervals.循环往复：在周期中或周期性间隔中重复出现美国传统〔revolving credit〕Credit repeatedly available up to a specified amount as periodic repayments are made.循环贷款：当间断性地偿付时可重复使用一定金额的货款美国传统〔roll〕To move in a periodic revolution, as a planet in its orbit.周期性运转：以定期运转的方式移动，如行星在自己的轨道上运行美国传统〔rotation〕Periodic rotation of tyres will result in longer tyre life.轮胎定期换位能延长轮胎的使用寿命。英汉大词典〔salon〕A periodic gathering of people of social or intellectual distinction.沙龙：社会或知识界各流派的定期集会美国传统〔southern oscillation〕The atmospheric pressure conditions corresponding to the periodic warming of El Niño and cooling of La Niña.南方大气波动：相符合于周期性厄尔尼诺现象的温暖及拉尼娜现象的寒冷所造成的大气压力美国传统〔sustained yield〕The continuing yield of a biological resource, such as timber from a forest, by controlled periodic harvesting.持续收获：通过控制周期性收获而取得的一种生态资源的不断产生，如森林中的木材美国传统〔sweep〕There may be periodic police 'sweeps' of crime in the area.警方可能对该地区的犯罪活动进行定时的“扫荡”。柯林斯高阶〔sweep〕There may be periodic police 'sweeps' of crime in the area.警方可能对该地区的犯罪活动进行定期“扫荡”。外研社新世纪〔tide〕The periodic variation in the surface level of the oceans and of bays, gulfs, inlets, and estuaries, caused by gravitational attraction of the moon and sun.潮，潮汐：由月球和太阳的重力吸引造成的海洋、海湾、水湾及河口等处水面高度的周期性变化美国传统〔variable star〕A star whose brightness varies because of internal changes or periodic eclipsing of mutually revolving stars.变星：亮度因为内部变化或共同旋转星体的间歇性晦暗而变化的星美国传统〔variable-rate mortgage〕A mortgage that is renegotiable at periodic intervals. The interest rate may be raised or lowered and is indexed to the prevailing market rates.利率可变抵押：在周期性间隔期间可重议定的抵押。利率可能上升或下降并与当前普遍的市场利率相挂钩美国传统〔vibration〕A periodic process.周期现象：一段期间的过程美国传统Carbon is next to nitrogen on the periodic table.在周期表里碳紧挨着氮。剑桥国际He suffered from periodic bouts of insanity.他患周期性精神失常。剑桥国际He suffers periodic mental breakdowns.他有周期性的精神失常。剑桥国际Inert gases form one group of the periodic table.惰性气体是周期表上的一组(元素)。剑桥国际These arrangements are subject to periodic review. 这些安排须定期检查。译典通Towards the end of his life he suffered from periodic bouts of insanity.在他生命末期他患了阵发性精神错乱病。剑桥国际 |
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