test dropping meaning in English
试验空投
试验性空投
Examples
- By improving surface condition of parts and one shot seal - off clean room grade , using ultrasonic vapor phase cleaning process , the inner parts of vacuum interrupter get cleaner . movable particles have been diminished by automatic current ageing , power frequency hi - voltage ageing and dynamic high current ageing . as the dielectric strength of clearance in vacuum interrupter improved , the probability of re - ignition in test drops evidently
通过提高零件表面加工质量,改善一次封排间的真空卫生条件、制定合理的超声波气相清洗工艺提高管内洁净度,采用自动电流老炼、超高压工频老炼、大电流动态老炼等工艺进一步消除真空灭弧室内活动性微粒,可提高真空灭弧室真空间隙介质强度,使真空开关投切电容器组的重燃率大大降低,并通过实验验证真空开关投切电容器组的重燃率在制造工艺改进后由原来的10 . 7 %降低至1 . 3 % 。