有效期 meaning in English
term of validity; period of validity 短语和例子
Examples
- This film has passed its expiry date .
这个胶卷已过了有效期。 - How long will the registered trade-mark remain valid ?
注册商标的有效期多长？ - It is difficult to ascertain the exact duration of protection .
要弄清确切的予防有效期并不容易。 - Mold spray life, with some of the formulas mentioned above, should be at least several hours with some touched up with the spray gun .
用上述配方配制的脱模剂，用喷枪喷涂，其有效期至少可达几小时。 - Promotion period : from now until may 31 , 2007
优惠有效期：即日起至2007年5月31日