...a company which made the Mig-21 jet fighter under licence from Russia.获俄罗斯授权制造米格–21喷气式战斗机的公司Al - alloys have special requirements on MIG welding due to their unique physical and chemical properties.铝合金因其独特的物理、化学性能对MIG...
Invariance refers to areas of agreement.不变性指的是一致的部分.The theory of relativity is concerned with two seemingly opposite ideas, relativity and invariance.相对论涉及两个似乎对立的概念, 相对性和不变性.Sooner or later we must ask whether this law ...
Worse, the changes have been backdated to the start of this year.更糟的情况是, 这些(收)化追溯至今年初算起.The contract that was signed on Thursday morning was backdated to March 11...周四早上签订的合同实际生效日期追溯到3月11日。The pay in crease is backdated ...