输尿管结核 tuberculo sis of ureter; tuberculosis of ureter
输尿管结石 calculus in ureter; calculus of ureter; ureteral calculus; ureteral stone; ureteric calculus; ureteric stone; ureterolith
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例句与用法
The auxiliary switch conducts when the two main switch turn off , and it also operates at zcs conditions . this switch not only helps the main switches achieve zvs , furthermore , it eliminates the oscillation between the transformer leakage inductance and the junction capacitance of two switches 辅助开关管为主开关管实现zvs创造了条件,同时辅助开关管在主开关管关闭期间实现zcs导通,大大减轻了变压器漏感和主开关管结电容之间的振荡。