一旦进入平流层，烟雾即可停留相当长一段时间并扩散到全球。
Once in the stratosphere and above the weather, smoke can linger for a long time and spread around the globe.
小型湖泛面将长6段地层分为4个小层序；各小层序内部都发育湖泊体系和三角洲体系。
The minor lake floods divided the stratum of the 6th segment into 4 tiny sequences, and the lakes and delta system were developed within each tiny sequence.
原油长输管道浅埋及低洼段的热能损失较大，采用聚氨酯硬质泡沫保温层效果良好（其保温效率达86.3％）。
Shallow buried and lowland laid pipelines, on account of their greater energy loss, are better to be insulated with hard polyurethane (Its insulation efficiency goes up to 86.3%).
应用推荐