Better methods of dewatering and disposing of these sludges are needed.需要研究更好的污泥脱水和处置方法.Frequently, dewatering of sludges is difficult, especially when of gelatinous consistency.通常来说, 污泥脱水是困难的, 特别是属于胶粘状稠厚污泥时.Dewatering a...
She is fond of collecting rare carpets.她喜欢收集稀罕少见的地毯。After Mike left for work I stripped the beds and vacuumed the carpets.迈克去上班后，我扯下了床罩并用吸尘器清扫地毯。The carpets are made in wool and nylon.这些地毯是用毛料和尼龙制成的。Carpets, Rugs, Mats a...