廉价是聚酯树脂受到欢迎的主要原因之一.Cheapness is one of the main attractions of polyester resins.将聚酯, 聚已酸乙稀酯从反应器中拿出来.The polyester , polythylene adipate, was removed from the reactor.经过多番实验, 终于找到了一种确能把它们转换成结实的聚酯的方法.After much experimenti...
于是,图K1是非平面的.The graph K 1 is hence nonplanar.天文学家通常认为,恒星际星尘都是紧靠着银河平面的.Astronomers usually assume that interstellar dust is closely confined to the galactic plane.之所以有此需要,是因为所加载荷通常是垂直于校准装置平面的.This is necessary because the...
1991年，这座房子登广告出售，售价为49,000美元。In 1991, the house was advertised for sale at $49,000.我将登广告寻人和我同去。I shall advertise for someone to go with me.如果你要吸引更多顾客，就试试在当地报纸登广告。If you want to attract more customers, try advertising in t...