动量守恒定律是矢量表达式,使用时要注意正方向的选取。
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请用括号里面提供的单词的合适形式填空:The children ____ enjoyed themselves at the Maker Faire in New York.( thorough)
Below is a list of ____ who can turn out custom laser-cut designs and circuit boards.(manufacture)
Roger likes reading; he is an ____member of the local book club.( act)
As a small country, it had to take a new road to its____.(industrialize)