他一直等到所有的行李都拿走了，但始终没看见葆拉的。He waited until all the luggage was cleared, but Paula's never appeared.我们大多数航班行李限重为每位乘客44磅。Most of our flights have a baggage allowance of 44lbs per passenger.旅客通过入境检查后领取了自己的行李。The passenge...
灰分的碱度可能与纤维的细度有关.There is a possibility that alkalinity of ash is related to fiber fineness.在足够的温度和碱度的情况下, 脂护酯可能被水解产生皂类.At sufficiently high temperatures and alkalinity, fatty esters may be hydrolyzed to produce soaps.讨论了...