The active ingredient is acetylsalicylic acid.有效成份是[乙水杨酸].Acetylsalicylic acid was synthesized from salicylic acid and acetic anhydride catalyzed by strong - acid cation exchange resin.以水杨酸和乙酸酐为原料、强酸阳离子交换树脂为催化剂合成阿司匹林.A n...
在闪石类石棉中,组成的原子呈链状排列.In amphibole asbestos the constiuent atoms are arranged in chain - like conformation.辉石与闪石也含有钙.Pyroxenes and amphiboles also contain calcium.向杂岩体方向靠近,在东德兰士瓦,曾报导有直闪石.Close in towards the complex anthoph...
For UV gloss coating can usually be either $ kind coater.进行UV光油涂布时一般可选用以下＄种涂布机器.II calender and paper machine or the same speed coater, and threading without slow - down.软压光可和纸机或涂布机同速, 且在引纸时不必降速.These tests clearly show ...
The barnacle and the clam are two examples of filter feeders.藤壶和蛤类是滤过觅食者的两种例子.It'started off well, but he seemed to clam up towards the end.刚开始很, 但是最后他似乎有些沉默.The movie star is a clam about her age.这影星对她的年龄守口如瓶....
天平台应稳固 、 防振、相邻区域不应对其造成干扰.The bench should be stable, anti - vibration anti - disturb by near area.该产品可广泛用于油封 、 衬垫、橡胶轧辊、防振橡胶等领域.The compound is widely to manufacture oil seals, gasket , roller and vibration rubber product...
D . When specified , gaskets of other materials are available as an option.作为备选件, 如果用户要求, 也可提供其它材料的垫圈.Daphne was so guileless that Claire had no option but to believe her.达夫妮如此忠厚老实，克莱尔对她的话也只有信以为真了。The regime at Latchmere...