钢筋冷拔
参考答案:
是使热轧低碳钢圆盘条钢筋在常温下强力通过特制的钨合金拔丝模孔,在拉伸和压缩的共同作用下,产生塑性变形。
母亲是伟大的,怀孕280天左右才能将胎儿孕育成熟.这280天里胎儿发育的场所是妈妈的( )
A.输卵管
B.子宫
C.胎盘
D.卵巢
He felt that he _______ the coldness that had grown between them.
A.was blamed to
B.was to blame for
C.was to be blamed for
D.blamed