本文通过对灰砂砖及灰砂砖砌体的较系统的试验研究,得出了灰砂砖砌体的抗压强度、抗剪强度、弹性模量、泊桑比系数、含水率、吸水率及软化系数等。
This paper has arrived at the compressive strength, shear strength, modulus of elasticity, poisson's ratio, moisture content, water absorption and softening factor of lime-sand brick masonry.
试验研究了不同桑品种、剪伐形式等因素对家蚕产卵数量的影响。
The effects of mulberry variety and pruning method on eggs laying of silkworm (Bombyx mori L.
通过改变湖桑品种的枝条剪伐与桑叶收获方式.设计了湖桑全年三次等量条桑收获的技术体系。
A technological systenl of harvesting Hu Sang three times, in spring, summer and autumn, in an equal shoot yleld was set up by changing the traditional pruning and leaf harvest.
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