gas-tanker ,gas-tank truck是什么意思

用法例句

Influence of air exhaust on injection molding process and selection of air vent parameters;

排气对注射成型过程的影响与排气槽参数的选择

Design of Vent in Injection Mold;

浅谈注射模具中的排气槽设计

In order to improve the arc medium recovery speed of circuit breaker,a novel chamber structure with rotary-gas grooves in nozzle was presented for 500 kV SF6 circuit breaker with one-break.

为了提高断路器的弧后介质恢复速度,笔者以500 kV单断口高压SF6断路器为研究对象,提出了在气体通道的上游增加旋气槽的设想,将传统的轴向吹弧改进为旋转吹弧。