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Spherical copper sulfide (Cu_xS) nanocages were synthesized by using Cu_2O nanocubes as tem- plates.

首先以NaBH4作为强还原剂在CuSO4溶液中快速形成Cu2O晶核,然后以葡萄糖为温和的还原剂和保护剂,由晶核生长成Cu2O立方体,并以其为模板制备中空的球状CuxS纳米笼子。

This paper mainly discuses how to determine the pile length, place the reinforcing steel bar coop and determine the water - cement ratio in construction of pressure - grouting and end - bearing piles.

本文主要讨论了钻孔压浆桩施工中桩长的确定,钢筋笼子的安放,水灰比的确定等措施。