sediment zonesettling zone沉淀: sediment; precipitate; sedim ...区: H region; H预沉淀区: pre precipitation zone碳化物沉淀区: carbide precipitation range海淀区: haidian district下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:沉淀区,即可在微信中查询翻译