通过正交试验得到一种以表面活性剂为主、辅以助剂的环保无磷脱脂剂.An environmental friendly phosphorus - free degreaser is obtained by orthogonal test.用适当的清洁剂和脱脂剂除去油脂.Remove oil and grease, etc. with a suitable detergent or degreaser.可以用脱脂剂或清洁剂来洗去加工油或冷却液...
注意,这些本征值并不是等距离分布的.Notice that the energy eigenvalues are not equally spaced.为此目的,我们将首先考虑下列的本征值问题.To this end we shall first consider the following eigenvalue problem.总可以做到使得简并的本征函数是正交的.It can always be arranged that dege...
They imported coffee into China.他们把咖啡进口到中国.The store's croissants are imported directly from France.这家商店的羊角面包是直接从法国进口的.Homemade goods are edging out imported foreign goods.国产货正逐步取代进口货物....