求翻译：dampen the placed water plug mortar with clean water when mortar has stiffened sufficiently;maintain damp condition for a minimum of 15 minutes是什么意思？

待解决

悬赏分：1 - 离问题结束还有

dampen the placed water plug mortar with clean water when mortar has stiffened sufficiently;maintain damp condition for a minimum of 15 minutes

问题补充：

匿名	2013-05-23 12:21:38 挫伤加筋充分砂浆时用干净的水放在水塞砂浆;保持潮湿的条件下至少15分钟

匿名	2013-05-23 12:23:18 即插即用迫击炮的意放水与清洁用水已增加硬度迫击炮弹时充分;维持潮湿条件为最低限度的15分钟

匿名	2013-05-23 12:24:58 dampen the placed water plug mortar with clean water when mortar has stiffened sufficiently;maintain damp condition for a minimum of 15 minutes

匿名	2013-05-23 12:26:38 当砂浆已足够加筋遏抑置入的水塞水泥砂浆的清洁用水；保持最少 15 分钟的潮湿条件

匿名	2013-05-23 12:28:18 挫伤加筋充分砂浆时用干净的水放在水塞砂浆;保持潮湿的条件下至少15分钟

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