Once the water level is lower than the line, we must add distilled water or liquid battery, do not directly tap water, it will form a damaged battery.
一旦水位低于下标线,就要加蒸馏水或电瓶补充液了,千万不要直接加自来水,这样会形成电瓶损坏。
Revetments protect the space from dam crest to the line a certain distance, normally 2.5m, under the minimum water level of the dam upstream.
护坡覆盖的范围,上游由坝顶护至水库最低水位以下一定距离,一般在最低水位以下2.5米。
In the level distribution, there is the largest amount of heterotrophic bacteria at tidal zone, less much at the area 100m from low water line, smallest at the area 300m from low water line.
在水平分布中,异养细菌的数量在潮间带最大,其次是离低潮线100m的海区,离低潮线300m的海区最小。
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