The model is divided into two parts which are LNG heavy gas diffusion and passive process.
模型分为两部分，LNG重气扩散阶段模型和被动扩散阶段模型。
The new process and technology on the "gas replace heavy oil" engineering project for reheating furnace of the 1700 hot strip in WISCO are introduced.
介绍了武钢1700热轧加热炉＂油改气＂燃料替代改造工程中采用的新工艺及技术。
Casings used in gas drainage Wells have large diameter and heavy weight, during the lowering process, compressive collapsing is an ordinary phenomenon.
瓦斯排放井的套管具有直径大、重量大，在下入井筒过程中，经常出现套管被挤毁的现象。
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