求翻译：搅拌砼前, 加水空转数分钟, 将积水倒净, 使搅拌筒充分润湿。搅拌第一盘时, 考虑到筒壁上的砂浆损失, 石子用量应按配合比规定减半。是什么意思？

Before mixing concrete, add water, idling a few minutes will water down the net, so that the mixing tube is fully wetting. Mixing the first set, taking into account the tube wall of mortar loss, the amount of gravel shall meet the provisions halved.

Stir the water, on behalf of idle minutes, pour the water and stir the net, fully wet. Blend the first disc, to take into account the mortar on the wall, a stone usage should be provided with more than half.

The agitation tong front, the watering idle operation several minutes, the ponding but actually only, cause to stir fully the tube moist.When stirs first, considers on the tube wall the mortar loss, the gravel amount used to be supposed according to mixture ratio stipulation halving.

Before mixing concrete, idling for a few minutes and water will water down the net, mixing tube fully wetting. When stirring first set, taking into account the loss of mortar on the wall, stones and halve the dosage should be required by mix.

正在翻译，请等待...