Applying effect and gaining economic benefit of them used in production and transportation of crude oil were introduced.
介绍了它们在原油开采和集输过程中的应用效果及取得的经济效益。
The author makes economic analysis and benefit perspective of the packer on the expense of transportation and storage.
并从压缩费用和运输费用方面对木片压缩打包机做了经济分析及效益展望。
Moreover, substitute electric heating oil transportation for oil craft of activated water transportation of double pipelines, which can be benefit for economic nature gas greatly.
而且，用电热管道代替双管掺水集油工艺，在节约天然气用量方面效果明显。
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