长期以来，木材皱缩现象一直被认为主要是因为木材中液体毛细张力产生的“负压强”压溃细胞壁造成的，该文对此提出了质疑。
The long-term existing theory of wood collapse which was thought to be caused by "negative pressure" resulted from capillary tension in the water capillaries was called in question.
负的压强没有意义？
这就是说，可以很简单的写出dG在，恒定压强下对温度的偏导数，是负。
That is, it's easy to write down straight away that dG with respect to temperature at constant pressure s is minus s.
同时假定,对于我们目前的目的而言，只有压强做功这就是说,我要把这里的dw替换为负。
I also want to assume for our present purposes that there's only pressure volume work going on, which is to say I want to put pdV p dV in here minus p dV for dw.
随着负压罐体积的增大及压强的减少，抽真空效率越高。
With the decrease of tank pressure and decrease of pressure, vacuum-drawing efficiency is improved.
结果表明，极限抗压强度与负温和应变率的对数均呈正比例关系；
Test results show that the ultimate compressive strength of the polycrystalline ice is directly proportional to the temperature and also to the logarithm of strain rate.
某工业厂房现浇混凝土楼面由于混凝土抗压强度偏低和负弯距钢筋下移，造成了抗弯承载力不足，出现了大量裂缝。
The low grade of concrete and negative moment reinforcement descending cause the appearance of concrete crack in a workshop floor.
它们的更低的热导性和相对更高的承受高速切削和负前角所产生热量的抗压强度。
Their lower thermal conductivity and relatively higher under high speed cutting and negative rake Angle of heat generated by the compressive strength.
它们的更低的热导性和相对更高的承受高速切削和负前角所产生热量的抗压强度。
Their lower thermal conductivity and relatively higher under high speed cutting and negative rake Angle of heat generated by the compressive strength.
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