|
|
| 21. | scamper up the steps |
| 蹦跳着上台阶 |
|
|
| | |
| 22. | terraced houses |
| 台阶式房屋 |
|
|
| | |
| 23. | flat-back stope |
| 逆台阶工作面 |
|
|
| | |
| 24. | dock-wall altar |
| 干船坞台阶 |
|
|
| | |
| 25. | bench excavation |
| 台阶式挖掘 |
|
|
| | |
| 26. | cylinder ridge reamer |
| 汽缸台阶铰刀 |
|
|
| | |
| 27. | Mind (ie Don't trip over) that step! |
| 小心那个台阶! |
|
|
| | |
| 28. | inside step design |
| 内台阶设计 |
|
|
| | |
| 29. | inwardly protruding shoulder |
| 内突台阶 |
|
|
| | |
| 30. | nominal step value |
| 标称台阶值 |
|
|
| | |