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- The stress free process makes the sealing strong and leakage proof. 检测证实，获得了性能良好的封接结果。
- A cyanide free process for gold imitation plating on plastic surface was advanced with pyrophosphate as complexing agent. 采用焦磷酸盐为络合剂研究出一种塑料无氰仿金电镀工艺。
- The green cresset is the mark of lead free processing. 绿色灯号是无铅制程标识。
- If used in combination with strong vacuum cleaner like the JANVAC,grinding or sanding can be done in one dust free process with vacuum so that hardly any dust will be left. 连接高效率的吸尘器;比如JANVAC吸尘器;在打磨过程中同时吸除粉真正做无尘打磨.
- Reading occupies most of my free time. 阅读占去了我大部分的闲暇时间。
- 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 crew remained free from scurvy. 那些船员仍然没有患坏血病之虞。
- Chemistry was her favourite subject at school. 她上学时最喜欢化学。
- Quality Control in the Trowel- free Process of Casting Floorslab 现浇楼板免抹灰工艺的质量控制要点
- He's a fervent believer in free speech. 他是言论自由的强烈信仰者。
- No one can cope with him in Chemistry. 在化学方面，谁也比不上他。
- I am not good at organic chemistry. 我的有机化学学得不好。
- She picked up a new magazine with her free hand. 她用空着的一只手拿起一本新杂志。
- We will do a Chemistry experiment this Friday. 这个周五我们要做化学试验。
- Jon sent away for a free almanac. 乔写信去要一份免费赠阅的年历。
- Now that I am free, I can enjoy music for a while. 既然有空，我可以享受一下音乐。
- 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。
