It was not until 1974 that his ability to write gelled again.直到1974年，他的写作才华才又得以发挥。They have gelled very well with the rest of the side.他们跟另一方的其他人合作得十分愉快。Their partnership gelled and scriptwriting for television followed....
The impellers are kept in their proper relationship to each other by spur gear.液轮之间借助于正齿轮保持彼此正常的关系.Mainly by the impellers, pump body and pump cover composition.主要由叶轮 、 泵体和泵盖组成.Welding is one of the important technologie...