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- vacuum contact printer 真空接触式曝光装置
- Step-Contact Printer: Contact printer in which the film being copied and the raw stock are advanced intermittently by frame. Exposure occurs only when both are stationary. 间歇式接触印片机：未曝光的胶片和待拷贝的胶片在接触印片机中逐格地间歇前进，只有当两者处于静止状态时，才发生曝光。
- The reason for exploitation of Cr-Cu series was discussed in view of the advantages and developments of vacuum swith, the technical vequirements and principles for rhc selection of vacuum contact materials. 本文从真空开关的优点及其发展、真空触头材料的技术要求及选择原则,论述了开发Cr-Cu系触头的必要性。
- Circuit Analysis of Vacuum Contact Diverter Switch 真空触点切换开关的电路分析
- vacuum contact plate method of dehydration 接触(板)式真空干燥法
- Some pumps and all vacuum cleaners work by suction. 有些泵和所有真空吸尘器都是借吸力工作的。
- She cast her eyes down to avoid direct eye contact. 她垂下双目以避免对视。
- His wife's death left him a vacuum in his life. 他妻子的去世使他的生活变得空虚。
- Her husband's death left a vacuum in her life. 她丈夫的死使她的生活变得空虚。
- Some people are living in a vacuum. 有些人过着与世隔绝的生活。
- A vacuum cleaner is a handy household tool. 吸尘器是一种使用方便的家庭用具。
- That poor madam has lost all contact with reality. 那位可怜的夫人脱离了现实生活。
- The shop repairs vacuum cleaners. 这家店修理吸尘器。
- For further information, contact your local agent. 要进一步了解情况，请与本地代理商联系。
- The porter turned off the vacuum. 清洁工关掉真空吸尘器。
- Have the children been in contact with disease? 孩子们同这种疾病有过接触吗？
- The symbol for the speed of light in a vacuum. 表示真空中光速的物理符号
- Helping a caller to contact somebody by phone. 帮助打电话者同某人电话联系。
- I came in contact with her by telephone. 我和她通过电话联络。
