The method was applied to direct determination of nitrite in collapse lake water, fishpond water, power plant waste water and well water with satisfactory results.
应用该法直接测定煤矿塌陷湖水、鱼塘水、电厂废水和地下水中的亚硝酸根获得满意结果。
Formed by the collapse of the Mount Mazama volcanoes approximately 6, 850 years ago, this caldera (crater) lake is located in Oregon.
这座位于美国俄勒冈州(Oregon)的火山湖是大约6 850年前马扎玛火山(MountMazama)坍塌形成的。
Kurile Lake was formed 8300-8400 years ago by a large volcanic explosion and a collapse of the Earth crust.
库页湖形成于8300—8400年前的一次大型火山喷发与地壳下陷。
A curtain grouting blocking technique was used for treating ground collapse and possible lake water entering mine pits due to drainage during mining.
为防止该矿采矿疏干导致地表大面积塌陷，甚至可能引起附近湖水倒灌矿坑，经多次技术论证后，采用了帷幕注浆堵水方案进行治理。
A curtain grouting blocking technique was used for treating ground collapse and possible lake water entering mine pits due to drainage during mining.
为防止该矿采矿疏干导致地表大面积塌陷，甚至可能引起附近湖水倒灌矿坑，经多次技术论证后，采用了帷幕注浆堵水方案进行治理。
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