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关注：1
2013-05-23 12:21
求翻译：下置填砾过滤器的管井,井管安装后,应及时填砾.是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
下置填砾过滤器的管井,井管安装后,应及时填砾.
问题补充： |
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2013-05-23 12:21:38
Set under gravel filter tube-wells to fill, well pipe installation, you should promptly fill gravel.
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2013-05-23 12:23:18
Under gravel filters fill the tube wells, tube wells, and it would be timely to fill boulders after installation.
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2013-05-23 12:24:58
Next sets fills in the gravel filter the tube well, after the well tube installment, should fill in the gravel promptly.
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2013-05-23 12:26:38
Under gravel filter tube-filling, well after the installation, it is timely filling gravel.
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2013-05-23 12:28:18
Under gravel filter tube-filling, well after the installation, it is timely filling gravel.
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