2、步进的
...by single action ==> 单效压塑by step ==> 步进的,分步测试by step braking ==> 阶梯制动 ...
tartling by Each Step步步惊心
sulfidation by-step分步预硫化
by-step discrimination逐步判别
by one step通过一步
Startling by Each Step步步惊心;步步惊心英语版
forming by one step一次成形
calculation by time step逐时计算
step by step step forward坚持