重冰是一个汉语词汇，拼音是zhòng bīng，解释是厚的冰层。
为了使OPGW光缆在重冰区线路上稳定可靠应用，电力用户、设计院及OPGW制造企业对此非常关注，并进行了广泛的研究。
For a stable and reliable use of OPGW in the heavy ice areas, the power consumers, design institutes and OPGW manufacturers are paying much attention to it and are carrying through extensive research.
据估计，破裂的冰重达300万吨。
It is estimated that the ice that broke off weighed three million tons.
本周，工程队曾试图将一个100吨重的钢制屋形盖置于漏油点上，不过很快，不断积聚的甲烷冰堵塞了该装置，最终以失败告终。
Efforts failed this week to lower a 100-ton steel containment dome onto the leakage site, because quickly accumulated methane hydrates blocked the device.
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