The construction of vertical cut-off walls on culvert pipes is the most difficult part in the reinforcement of reservoirs in danger.
病险水库除险加固中,垂直防渗墙在涵管上的施工是难点。
Wire saws can cut in any orientation, vertical or horizontal.
钢丝锯能够切割任何方向,纵向或横向。
This rather undermines the notion that vertical farming will save energy and cut carbon emissions, notes Mr Head, who has carried out several studies of the idea.
Head先生指出,这项能源的使用肯定会打破这个观念,就是立体式农场将会节约能源,并会消减二氧化碳的排放,Head先生在这一领域已经展开了数项研究。
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