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...
A necklace set with aquamarines.项链镶嵌着海蓝宝石。The bold necklace flatteringly lightens her skin tone.这条光彩夺目的项链衬得她的肤色亮了起来。The necklace consisted of amethysts set in gold.这是一条金镶紫水晶项链。...