of course, that is what the handle is for.

of course, that is what the handle is for.

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送交者: meiyou 于 2007-08-24, 15:05:06:

回答: 从物理学的力矩等因素上考虑在装药量相同的条件下戴木柄的手榴弹是否应该能扔的更远? 由 HunHunSheng 于 2007-08-24, 13:50:10:

i was taught that in middle school PE course.