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(子(zǐ )母(mǔ )钟(zhōng )，子(zǐ )母(mǔ )钟(zhōng ))

由(yóu )母(mǔ )钟(zhōng )定(dìng )时(shí )传(chuán )送(sòng )脉(mò )冲(chōng )电(diàn )流(liú )以(yǐ )控(kòng )制(zhì )子(zǐ )钟(zhōng )统(tǒng )一(yī )运(yùn )转(zhuǎn )的(de )计(jì )时(shí )装(zhuāng )置(zhì )。

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●子母钟（简体版）