发布时间:2025-01-31 11:56:33
这个要看你营养土的成分,正常营养土和黄沙比例为1:1,黄沙主要增加过水性,防止水肥过大引起烂根,营养土如果泥炭土、椰糠等成分过大则要增加黄沙的比例
为什么浇砼的时候有主次梁的楼板宜顺着次梁的方向浇筑单向板宜顺着长边方向浇筑
2025-01-31 11:56:33 2025-01-31 11:56:33 2025-01-31 11:56:33描述家住新建小区电梯房交房时配的是一扇入户防火门朝里面开的刚入住的时候还没换锁芯平时在家
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