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- Apply the proper valve for the application required. 为所需的应用申请适当的阀门。
- Assigning the ideally fitted wedge, ground and lapped, to proper valve body. 将研磨后的楔板分配到最适合的阀体上。
- Electrical wiring should conform to NEMA codes to assure proper valve operation and longevity. 电源线应该符合美国电气制造者协会NEMA规程，以确保正常的阀门工作状态和使用寿命。
- That oyster closed up its valves. 那个牡蛎把壳合拢起来。
- I advise waiting till the proper time. 我建议等到适当的时候。
- I do not think it's proper for you to behave so. 我认为您这样的举止不合体统。
- It's not proper for you to catch him up very short. 你突然打断他的话是不恰当的。
- She's not at all a proper person for you to know. 她可不是正派人，你不应该结识她。
- Having a shell consisting of two hinged valves. 双瓣壳的有由两个开合的瓣组成贝壳的
- She hadn't had a proper holiday for years. 多年来她都没有过真正的假期。
- The company does not take proper fire precaution. 公司未采取正当的防火措施。
- Water is not a proper substitute for wine. 水不是酒的适当代用品。
- The pages aren't in proper order. 这些页数次序不对。
- Recycling is the only proper way. 循环再生是惟一的好办法。
- It's hard to get at the spark plug without a proper wrench. 没有一把合适的扳钳，要抓住那个火花塞是困难的。
- I made a proper balls-up of that exam. 那次考试我考得一塌糊涂。
- Lack of proper food often stunts a child. 缺少适当的食物常常阻碍小孩的发育成长。
- Many young people think old people are too proper. 许多年轻人认为老人太循规蹈矩。
- He could not come up with a proper answer. 他想不出一个合适的回答。
- Proper nouns are spelled with a capital letter. 专有名词用大写字母。
