Contamination - proof is an absolute necessity in the maintenance of fluidic devices.防止污染对保养射流装置是绝对必要的.Then the difference between fluidic light discharge theory and Townsend discharge theory is also described.同时阐述了流光放电理...
He hied himself to the hospital.他赶紧去医院.He hied himself to the post office for his express mail.他赶紧去邮局取他的快件邮包.He hied himself to the post office.他赶紧去邮局....
光线用棱镜 、 光栅或干涉仪分解.The light is resolved by prisms, gratings, or by an interferometer.迈克耳孙和莫雷使用一台迈克耳孙发明的干涉仪.An interferometer invented by Michelson was used by Michelson and Morely.不很精确的射电干涉仪观测表明,这个源的角径约为1.5弧秒.Comparativel...