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- chemistry hermetic material 化学密闭材料
- Abstract: The paper presents a study and an analysis o f the category of hermetic device of hydraulic cylinders,the shape of hermetic rings,hermetic materials and structure of hermetic devices. 摘 要: 对液压缸密封装置的分类、密封圈形状、密封材料和密封装置结构进行了分析与研究。
- The material is flawed throughout. 这种材料到处是裂缝。
- We have three periods of chemistry a week. 我们一星期三节化学课。
- The scientist probed into the secrets of chemistry. 这位科学家探索了化学的种种奥秘。
- The hermetic confines of an isolated life. 与世隔绝生活的不受外界干扰的区域
- Chemistry was her favourite subject at school. 她上学时最喜欢化学。
- No one can cope with him in Chemistry. 在化学方面,谁也比不上他。
- He insists the condition to use the best material. 他坚持以使用最好的材料为条件。
- I am not good at organic chemistry. 我的有机化学学得不好。
- That material surpasses all others in fineness. 那种材料精良超过其他所有材料。
- The problem is how we are to get the raw material. 问题是我们怎样得到原材料。
- We will do a Chemistry experiment this Friday. 这个周五我们要做化学试验。
- Jim is going to get material for a new book. 吉姆正打算为一部新书准备材料。
- The storm did a great deal of material damage. 暴风雨造成了大量物质损失。
- He is an authority in the region of chemistry. 他是化学界的权威。
- I have only a rudimentary grasp of chemistry. 我只掌握了化学的初步知识。
- I have lost my interest in chemistry. 我对化学已不感兴趣。
- Radioactive ray is material thing. 放射线是实际的物质。