放大器自激振荡的频率就取决于流体的速度.Amplifier self - oscillates at a frequency depending on the velocity of the fluid.我们从经验观点来介绍运算放大器.We will approach the op - amp from an empirical point of view.它是三极管放大器的等效电路.It is the equivalent circu...
Leaching of copper from chalcocite with acidic acetonitrilecopper sulphate system was studied.研究了用酸性乙腈硫酸铜体系从辉铜矿中提取铜.The paper discusses a new method for producing cupric feed copper sulfate by chalcocite and ehalcopyite....
She selected a low gear and started down the track carefully.她选了低速挡小心翼翼地沿小径下行。Price quotes on selected product categories will be sent on request.所选产品类别的报价承索即寄。The sample was selected from the medical records of two gene...
The books are written off as a morass of stuff and nonsense.这些书写的全是一派胡言.a morass of detail被掩盖的细节...the economic morass.经济混乱I tried to drag myself out of the morass of despair.我试图从绝望的困境中走出来。EXAMPLE : During the rainy seas...
Plankton is at the bottom of the marine food chain.浮游生物处于海洋食物链的最底层.marine planktonic diatom海洋浮游硅藻marine biota海洋生物区marine fauna水产动物Bezanik is diving to collect marine organisms.贝扎尼奇正在潜水采集海洋生物。marine and freshwater eukaryo...