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- The present work reports experimental determinations of atomic hydrogen in microwave discharge hydrogen plasmas formed from TM01 MW mode in an ASTeX-type reactor via optical emission spectroscopy by using Ar as an actinometer. 因此，对氢原子浓度的原位诊断是研究和改进上述等离子体工艺过程的重点也是难点之一。 本文在分析了多种等离子体诊断方法后，采用了装置简单、对等离子体没有扰动的发射光谱技术，通过Actinometry方法(以Ar做内标气体)，对ASTeX型微波放电氢等离子体中的氢原子浓度进行了原位测定。
- He is an authority in the region of chemistry. 他是化学界的权威。
- I gave him money as an inducement to leave. 我给他钱，诱使他离去。
- That's rather an effective use of color. 这种使用颜色的手法效果相当好。
- The accident put an untimely end to the party. 意外事故使聚会匆匆结束了。
- His strength in a crisis is an ace in the hole. 临危不惧是他的看家本领。
- The plant was growing at an angle. 植物呈一定角度生长。
- We have three periods of chemistry a week. 我们一星期三节化学课。
- She spent an hour in quiet contemplation. 她静静地沉思了一个小时。
- The scientist probed into the secrets of chemistry. 这位科学家探索了化学的种种奥秘。
- It is often unpleasant to see an anomaly animal. 见到一只畸形动物常常会使人感到不快。
- Chemistry was her favourite subject at school. 她上学时最喜欢化学。
- The indication is that it is an underworld killing. 迹象表明它是下流社会的谋杀。
- No one can cope with him in Chemistry. 在化学方面，谁也比不上他。
- Her daughter Nancy is an ewe lamb to her. 她的女儿南希是她的心肝宝贝。
- I am not good at organic chemistry. 我的有机化学学得不好。
- He had only an imperfect understanding of his task. 他对自己的任务只是一知半解。
- We will do a Chemistry experiment this Friday. 这个周五我们要做化学试验。
- An idea popped into his mind like a flash. 他头脑里突然闪过一个念头。
