... 测时仪 chronograph 测时仪器 time keeping instrument 精密测时仪 chronoscope ...
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time keeping instrument
计时仪器
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The steelyard clepsydra, a special type of clepsydra, had been a chief time-keeping instrument during the Sui-Tang period a nd the earlier stage of Northern Song dynasty.
秤漏是一种特殊类型的漏刻，在隋唐及北宋前期曾是司天机构的主要计时仪器。
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