Older water heaters can rust, collect sand and sediment in the bottom, and are also costing you 15% of your household’s energy dollars.
老旧热水器的底部会生锈，积灰并产生沉淀物，同时还会消耗15%的家庭能源。
Water and sediment from the bottom of the drum set by Pelton mesh discharged.
污水和泥沙由滚筒的网孔经底部集水斗排出。
The BIO-ENV analysis revealed that water depth, bottom temperature and sediment type are all the important environmental factors influencing upon the species and abundance of BBL fauna.
BlOENV分析表明，水深、底层水温及底质类型是影响海洋底边界层动物种类组成与丰皮的重妥因数。
The BIO-ENV analysis revealed that water depth, bottom temperature and sediment type are all the important environmental factors influencing upon the species and abundance of BBL fauna.
BlOENV分析表明，水深、底层水温及底质类型是影响海洋底边界层动物种类组成与丰皮的重妥因数。
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