She was forced to live in a cockroach-infested house.她被迫住在一间蟑螂成群的房子里。She was forced to live in a cockroach - infested house.她被迫住在一间蟑螂成群的房子里.A species of cockroach sprays a substance , ethylacrolein, that is a kind of tea...
The channel is overlain by siltstone and lenticular beds of limestone.河道上面覆盖着粉砂岩和石灰岩透晶体.It is also wedge - shaped to lenticular.另外,它也呈楔 状 至透镜状.Several clouds are stacked up into one striking lenticular cloud.进而导致成群的云系堆积成...
Introduces the concepts of available anergy and reduced exergy by analysing the energy utilization process.通过对其能量利用过程的分析,引入可用和折合的概念.Exergy is the measure which coordinates quality with quantity of energy.是能量的“质量”与“数量”的统一...