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| 21. | secondary containment |
| 外壳安全壳 |
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| | |
| 22. | canning material |
| 外壳材料 |
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| 23. | extended envelope |
| 厚外壳 |
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| 24. | dust-proof case |
| 防尘外壳 |
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| 25. | multilayer package |
| 多层外壳 |
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| 26. | oil pump housing |
| 油泵外壳 |
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| 27. | corrugated tank |
| 波形外壳 |
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| 28. | transformer shell |
| 变压器外壳 |
|
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| 29. | watertight housing |
| 水密外壳 |
|
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| 30. | case temperature |
| 外壳温度 |
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