We encounter only displacements of the first type . 我们只遇到第一类的驱替。
A first-class letter should arrive the following day . 第一类邮件应于次日到达。
First class costs 5 pence more . 第一类邮件贵5便士。
Properties of the first kind are called relative properties of the surface . 第一类性质被称做曲面的相关性质。
We outline the method here only for the first and second problems of elastodynamics . 在这里我们只针对第一类和第二类弹性动力学问题来概述这种方法。
Defects of the first kind are microcracks caused by surface damage to the finished product . 第一类缺陷，是微裂纹，它是由于制品加工形成的表面损伤引起的。
A simple example of the first type is the slide rule, which mathematicians and scientists have been using for generations . 好几代数学家和科学家沿用的计算尺就是第一类中的简单例子。
The first is the commercial hotel, which provides services essentially for transients, many of them travelling on business . 第一类是商业旅馆，他们主要接待的是过往旅客，其中许多是外出经商的人。
The spiritual type serves god by serving mankind 第一类的会以服务人群来服务神。
Service company " type i " arrangement - salaries tax 服务公司"第一类"安排-薪俸税
