The black mater metal plate is called a collector, there.这个黑色金属板叫做吸热器.In metal lubrication two distinct regions are recognized: boundary and hydrodynamic.在金属的润滑作用中存在两个不同区段: 边界和流体区.Getter - ion pumps decrease chamber pres...
As he talked, an airforce jet screamed over the town.他谈话时，一架军用喷气式飞机在镇子上空呼啸而过。The Royal Airforce sill remained dangerously short of bombers.英国皇家空军仍未脱离极为缺乏轰炸机的危境.The town has been heavily bombarded by the army backed by th...
"Stand up, please" she said in a orotund tone.“请起立”，她用洪亮的音调说。An area disunity, is an orotund tone color that points three voice Districts different from volume.所谓声区不统一, 就是指三个声区的声音音色和音量不一样....