蒸发的物质能再凝结, 形成新的粒子.Evaporated material can recondense, forming new particles.吸气离子泵通过剩余气体与蒸发的金属之间的化学反应减少了内腔的压力.Getter - ion pumps decrease chamber pressure by chemical reaction of residual gases with an evaporated metal.它通...
She had quite severe bruising and a cut lip.她身上有严重的淤伤，嘴唇也破了。He suffered cracked ribs and bruising.他断了肋骨还有挫伤。Within six weeks the bruising had gone, but it was six months before it all healed.青瘀在6周内就消退了，但伤却是6个月后才全好了。...