Something called a'hardener alloy'is made.制出一种叫做 “ 中间合金 ” 的东西.A hardener is added to the acrylic enamel just before use.在用之前添加硬化剂到丙烯酸瓷釉中.This paper introduced detailed two kinds of hardener of epoxy resin.本文比较详...
Whereas attractants, repellents, and many incitants are olfactory substances , stimulants, and deterrents are usually gustatory.引诱剂, 排斥剂还是其他的兴奋剂都是嗅觉物质, 但刺激剂和阻抑剂常常是味觉物质....
It was a question that Roy not unnaturally found impossible to answer.那是个罗伊显然无法回答的问题。Not unnaturally, Jane greatly resented Harry's interference.很自然地，简对哈利的干预极为不满。Try to avoid shouting or speaking unnaturally.尽量不要高声喧...