|
|
| 41. | bulb socket with edison cap |
| 螺口灯泡 |
|
|
| | |
| 42. | free spiro union |
| 自由螺接 |
|
|
| | |
| 43. | propeller effect |
| 螺桨效应 |
|
|
| | |
| 44. | single-flight type augerhead |
| 单翼螺钻 |
|
|
| | |
| 45. | propeller torque |
| 螺桨扭矩 |
|
|
| | |
| 46. | bolt and nut making machine |
| 螺栓螺母机 |
|
|
| | |
| 47. | Sliced Sea Whelks with Chives |
| 韭黄螺片 |
|
|
| | |
| 48. | galvanized iron screw hook |
| 镀锌螺钩 |
|
|
| | |
| 49. | helicoidal wheel shaft |
| 螺状轮轴 |
|
|
| | |
| 50. | spiral pointed tap |
| 螺尖丝锥 |
|
|
| | |