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杂环原子
释义
DEFINITIVE EXAMPLES 权威例句〔heteroatom〕An atom other than carbon in the structure of a heterocyclic compound.杂环原子:杂环化合物结构中的除了碳之外的原子美国传统
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ball boy
ball bullet
ball burnishing
ball cabbage
ball cage
ball carrier
ball carrier
ball cartridge
ball case cover
ball catch
ball change
ball charge
ball check
ball check nozzle
ball check valve
ball choke
ball chuck
ball clack
ball clay
ball cock
ball cock washer
ball collar thrust bearing
ball condenser
ball contact tip
ball control
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