The Dominican Republic has banned cutting down trees for charcoal and subsidized propane as a substitute, and the contrast can be seen in satellite photographs of the border.
多米尼加共和国已经禁止砍伐森林当柴烧，通过补贴让天然气取代木炭，现在两国之间的差异能从卫星拍的国界图片上看得一清二楚。
The work took cutting machine use raw materials for inflammable gas e. g. acetylene, propane, gas, such as liquefied petroleum gas (LPG).
切割机使用的工作原料为易燃性气体如乙炔、丙烷、液化气等气体。
When propane gas cutting low carbon steel plate, the cost varies with the thickness of the steel plate.
用于低碳钢板气割时，气割成本随板厚不同而变化。
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