您要查找的是不是：
- self maintained emission 自持发射
- They all maintained a reverent silence. 他们都保持肃静。
- self maintaining nuclear chain reaction 自持链核式反应
- The emission of visible light by a hot object. 白热光物体遇热发出可见光
- I do not like to go to the movies by my self. 我不喜欢自己一个人看电影。
- He maintained close ties with the masses. 他和群众保持着密切的联系。
- The car has to be constantly maintained. 汽车必须经常保养。
- I my self is going to make a sandwich. 我要亲手做个三明治。
- He was a wreck of his former self. 他身体坏得不成样子，已兴从前判若两人。
- Knowledge of self increases as one gets older. 随着年岁的增长，人们的自我认识也不断加深。
- He maintained his dignity throughout the trial. 在整个审讯过程中他始终不失尊严。
- He's not looking like his old self lately. 他最近看起来不像以前那样。
- They maintained only formal unity among themselves. 他们只在表面上保持一致。
- They maintained that ghosts had no substance. 他们认为鬼魂不是实物。
- He is my best friend, my second self, as it were. 他是我最好的朋友，或者说，是第二个我。
- He never has any thought of self. 他从不考虑个人得失。
- The amount or rate of emission or ejection. 排放量流量、流速，或排出量，排出的速度
- He is now out of all conceit with his former self. 他现在全盘否定了他原来的自己。
- She maintained her equanimity throughout her long ordeal. 她在长期的苦难中心情一直都很平静。
- We must maintain a firm attitude. 我们必须采取坚定的态度。
