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| 11. | This will prevent damage to the disc sealing edge. |
| 安装阀门时,蝶板应该处于关闭或几乎关闭的位置。这是为了防止蝶板密封装置受到损坏。 |
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| 12. | "Before installing the correct valve, review the installation instructions to prevent damage to the valve |
| 在安装正确的阀门之前,为了防止损坏阀门,并保证充分发挥阀门的工作性能,请阅读一下安装指南。 |
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| 13. | Some products have to be packed individually to prevent damage in transit or because they are normally |
| 有些产品需要分别包装，以防运输途中受损，或者由于这些产品一般是拆零销售的； |
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| -- 来源 -- 企业管理英语口语（第二版）(1) - 17 A Visit to the Works?One |
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| 14. | Back-pressure protection is needed to prevent damage to the regulator. |
| 提供止回阀。需要回压保护，以防止损坏调整器。来自高压系统的气体可能回流到调整器。 |
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| 15. | The manufacturer shall use designated storage areas or stock rooms to prevent damage or deterioration |
| 制造业者应使用指定之储存场所或库房,以防止产品于待用或待运期中受到损伤或变质。 |
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| 16. | And install clutch safe-device to prevent the damage. |
| 并设有离合安全装置，以防超负荷引起的机器损伤。 |
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| 17. | Transimission device and part should be hung up when the valve is in horizontal in order to prevent damage |
| ● 当阀门水平放置运输时传动装置及传动部位应悬空，以防止传动轴受力过大变形损坏。 |
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| 18. | A small piece of wood or metal placed on the head of a pile to prevent damage to the pile while it is |
| 桩垫木放在木桩一头的小块木头或金属，使钻凿时不致损坏 |
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| 19. | Catechins may also prevent DNA damage caused by carcinogens. |
| 儿茶酚还可能预防致癌物质引起DNA损伤。 |
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| 20. | Do not handle cylinders roughly or carelessly to prevent damage to the cylinder or the filler. |
| 禁止粗暴或漫不经心地操作钢瓶，以防止损伤钢瓶或填充物。钢瓶跌倒会导致保险塞处泄漏。 |
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