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1·The physical and mechanical properties of middle cutting wood of Cunninghamia lanceolata are inferior to those from natural forests.

杉木中伐材的物理力学性能不如天然林中伐材。

2·Which one has the superior mechanical properties? The plywood. Why?

哪一个的力学属性更好,胶合板的，为什么？

3·Molybdenum in structural steel can improve mechanical properties.

构造钢中参加钼，能进步机械性能。

4·They are used principally when their mechanical properties are mandatory.

它们主要用在必须使用其机械性质的地方。

5·To evaluate the time effect on mechanical properties of orthodontic arch wires.

目的评价临床使用时间的长短对弓丝机械性能的影响。

6·MMT content of 5 percent of the composite material has good mechanical properties.

蒙脱土含量为5%的复合材料具有较好的综合力学性能。

7·In addition, the essential mechanical properties of metal foam are introduced briefly.

此外，简单介绍了泡沫金属的基本力学性质。

8·Driving wheel groove embedded viscoelastic packing, which makes excellent mechanical properties.

驱动轮槽镶嵌粘弹性填料，具有优异的机械性能。

9·The physical and chemical properties, mechanical properties and fire-retardant properties were also given.

列举了涂料的理化性能、力学性能和耐火性能的检测结果。

10·Bricks show no loss of useful mechanical properties even when 20-30% of their content is slag. Nor do they leak.

即便当渣含量达20% - 30%时，制成砖并未显示出有用力学性能的损失，同样也没有产生裂纹。