constant duty

on duty ... compound -ties 混合税, 复合关税 constant duty 不变工况 consumption duty 消费税 ...

航海及海运专业... ... constant duty cycle 恒定工作周期 constant duty 恒定工况 constant energy welding machine 恒能电焊机 ...

石油英语词汇_专业词汇_专业英语... ... constant duration 等时间间隔 constant duty 恒定负荷 constant entropy 等熵 ...