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41. | packed-gland joint |
| 填料函式连接 |
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42. | packed array type |
| 压缩数组类型 |
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43. | packed bed filter |
| 填充层过滤器|滤清器 |
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44. | packed for export |
| 出口用包装 |
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45. | packed bed reactor |
| 填充床反应器 |
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46. | packed like sardines |
| 拥挤得象罐头里沙丁鱼|挤得满满的 |
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47. | packed character format |
| 压缩字符格式 |
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48. | rubber packed coupling |
| 橡皮套弹性联轴节 |
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49. | packed hole assembly |
| 满眼钻具组合 |
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50. | Be tightly packed |
| 水泄不通 |
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