Mode selection of a moderate power gyrotron operating at the ISM frequency and the second harmonic is discussed in detail.
详细讨论工作在二次谐波的ISM频率中等功率回旋管的模式选择问题 。
Study on moderate power lithium ion battery;
中等功率型锂离子蓄电池的研究
Vocational Guide in Secondary Vocational School;
中等职业学校职业指导刍议