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Pocket Chronometer

1、袖珍天文表

... 实用天文表 Handy Tables 袖珍天文表 pocket chronometer 克卜勒天文表 Tellurium Johannes Kepler ...

2、天文怀表

...pocket chamber ==> 携带式剂量计,袖珍电离室,袖珍剂量计pocket chronometer ==> 天文怀表pocket clay ==> 高硅粘土 ...

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