back strength
短語詞組
- back k strength 背力
- back -fill strength 充填體強度
- Back -part strength test 靠背強度測試
- back strength test -static-type II &III 靠背靜態(tài)強度測
- Back strength test -static-type I 靠背靜態(tài)強度測
- strength of back flow 回流強度
- FEM back -analysis from instability-strength degradation 有限元失穩(wěn) 返回 back strength