Other shaping operations include drawing into wire, casting in moulds, and forging.这个句子中,有( )个并列的宾语。
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There is no tendency for hardening by mechanical work until the lower limit of the recrystalline range ().
A. is reached
B. reached
C. reach
D. is reaching
There is no tendency for hardening by mechanical work until the lower limit of the re-crystalline range is reached.句子中,tendency 的含义的( )。
A. 迹象
B. 现象
C. 趋势
D. 方向
annealing作名词时的含义是( ),动词形式是( )。
distortion的动词形式的( ),是一个( )词。