By the 1930s the wristwatch had almost completely supplanted the pocket watch.到了 20 世纪 30 年代，手表几乎完全取代了怀表。He glanced at his wristwatch. 'I suppose we'd better make a move.'他看一眼手表说：“我想我们最好动身吧。”He has a very ...
When his headaches developed Nick became bad-tempered and even violent.尼克出现头痛时脾气就变得很差，甚至还会动粗。Larry began suffering severe headaches and violent mood swings.拉里开始出现严重的头痛和剧烈的情绪波动。It is necessary initially to classify the he...
It makes use of an intermediate of medicine compound and as a disperser in dyestuff.本品用作分散染料的中间体和医药中间体.Fiber reactive dyes - from true chemical bounds between dyestuff and fiber.纤维活性染料 -- 染料与纤维之间形成真正的化学键.Mainiy use: Used...