Objective To establish solvent desorption gas chromatographic method for determination of Diisobutyl ketone in workplace.目的建立工作场所空气中二异丁基(甲)酮的溶剂解吸气相色谱测定方法.The diisobutyl dicarboxylate was prepared by using acid and isobut...
The Martians had caIcuIated their descent with amazing perfection.火星人对他们的降落点做过精确的计算.Really? You're an amazing bargain hunter!真的 吗 ?你真是个打折老手.It was amazing how my mother coped with bringing up three children on less ...
On beaches, keep your camera safe from sand by enveloping it inside a plastic bag.在沙滩上时，将相机用塑料袋包裹起来以防止进沙子。Always the eyes watching you and the voice enveloping you.那眼睛总是死死盯着你,那声音总是紧紧围着你.The only barrier was a mosquito ne...
Bergson proclaimed that there are three modes of apprehending the world: perception, rationality, and intuition.柏格森声称,认识世界的方式有三种: 感知 、 理性和直觉.Intellectuality and rationality can not directly deal with these ultra logical ...
A car's starter is basically an electric motor.汽车的启动装置基本上是个电动机。As a business proposition, it's a non-starter.作为一份商业建议，它不可能取得成功。The starter fired his starting gun.发令员鸣响起跑枪....
It appears to be a throwback to prehistoric times that it has somehow managed to survive.不知什么原因它竟然能够存活下来,这看来是对史前时期的一种返祖现象.The hall is a throwback to another era with its old prints and stained-glass.这个大厅的古老图案和彩色玻璃是对过去一个时...