对于任意的截面, 比值Mp/My叫做形状系数.For any section, the ratio Mp / My is called the shape factor.控制单元的形状是任意的.The shape of the control box is arbitrary.如果它们是可见的, 就可以被动态地放到5个任意的位置之一.If they are visible, they can be dynamically positio...
The rhododendrons encroached ever more on the twisting drive.越来越多的杜鹃花长到了蜿蜒的车道上。The rhododendrons encroached ever more on the twisting drive...越来越多的杜鹃花长到了蜿蜒的车道上。great clumps of rhododendrons大片的杜鹃花丛Several of these rhodode...
They replaced trams by buses.他们用公共汽车代替了电车.Trams in London have been supplanted by buses.伦敦的电车已经由公共汽车取代了.He economized by using trams instead of taking a taxi every time he went to school.他上学搭电车而不坐出租汽车,以节省钱....
Purpose: Used in X - ray image intensifier , flasher, analytically reagent medical and special optical etc.用途: 红外光谱和闪烁器的光学材料, 用于特种玻璃、医药及用作分析试剂.The distinction will be made analytically more precise later when we consider...