问答题
简答题
翻译In general, gas pipelines operate at higher pressure than crude lines; gas is moved through a gas pipeline by compressors rather than by pumps; and path of natural gas to the user is more direct.
【参考答案】
一般说来，天然气管线的操作压力大于原油管线，输送天然气用压缩机，而不是用泵天然气去用户的途径更为直接。
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