|
|
| 51. | bearing saddle bore |
| 轴承座孔 |
|
|
| | |
| 52. | bore well filter |
| 钻井过滤器 |
|
|
| | |
| 53. | gun bore evacuator |
| 炮膛抽气装置 |
|
|
| | |
| 54. | cylinder bore gage |
| 汽缸内径规 |
|
|
| | |
| 55. | single-track bore |
| 单轨隧道 |
|
|
| | |
| 56. | small-bore engine |
| 小径气缸发动机 |
|
|
| | |
| 57. | small bore rifle |
| 小口径来复枪 |
|
|
| | |
| 58. | bore maximum wear |
| 缸径最大磨损量 |
|
|
| | |
| 59. | helical sounding bore |
| 螺旋形触探钻 |
|
|
| | |
| 60. | counter bore=counterbore |
| 埋头孔 |
|
|
| | |