平流层的硫是火山喷发的自然结果，这种硫每吨比燃烧煤释放的硫能造成更强的冷却效应。
Sulphur in the stratosphere, a natural result of volcanic eruptions, provides a lot more cooling per tonne than the coal-emitted sort.
改善后的模型能较好地反映横向剪切效应对复合材料层板屈曲特性的影响。
Thus the effect of transversal shearing deformation on the buckling characteristics of composite laminated plates can be investigated more accurately by means of the modified model.
应用推荐