空气防止了催化式排气净化器的过载及可能产生的损坏.The air guards the catalytic converter from overload and possible resulting damage.废气中大量的HC会损坏催化式排气净化器.The high level of HC in the exhaust gas may damage the catalytic converter.如何于本中心推介之产品内选择最适合...
The studio isn't soundproof.这个摄影棚并不隔音。This material is soundproof.这材料是隔音的.These boxes were usually old freight cars that were almost soundproof.这些包厢通常采用几乎能隔音的旧火车货柜....