The concrete mixtures treated by vacuum water free can enhance the early stage strength, form release time and working efficiency.
混凝土拌和物经真空脱水处理后，早期强度提高，拆模时间提前，可提高工效。
Apple devices have been retaining this information for some time, but it was kept in a different form until the release of the iOS 4 operating software last year.
苹果公司保存这些信息有一段时间了，但直到去年iOS4设备的发布才将这些信息用另一种形式保存起来。
Empty ULD Release time - the waiting time of a trucker, after submitted unit Release Form at the ULD collection points, to receive the first empty unit loading device.
提取空置货箱时间-货车司机在货箱收集点递交发放货箱表后至提取第一个空置货箱的处理时间。
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