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| 41. | prodecessor activity |
| 前导活动 |
|
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| | |
| 42. | commercial activity |
| 商务活动 |
|
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| | |
| 43. | management activity |
| 管理活动 |
|
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| | |
| 44. | logistics activity |
| 物流活动 |
|
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| | |
| 45. | thermionic activity |
| 热电子激活性|热放射效率|热离子激活性 |
|
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| | |
| 46. | project activity |
| 计划活动 |
|
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| | |
| 47. | proteolytic activity |
| 解蛋白活度 |
|
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| | |
| 48. | mining activity |
| 采矿工程 |
|
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| | |
| 49. | proton activity |
| 质子活度 |
|
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| | |
| 50. | demonstration activity |
| 示范活动 |
|
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| | |