back strength
短语词组
- back k strength 背力
- back -fill strength 充填躰強度
- Back -part strength test 靠背強度測試
- back strength test -static-type II &III 靠背靜態強度測
- Back strength test -static-type I 靠背靜態強度測
- strength of back flow 廻流強度
- FEM back -analysis from instability-strength degradation 有限元失穩 返回 back strength