简答题 翻译：Products pipeline can often carry serveral different products in the same pipeline.

问答题翻译：As it expends it rises in the take -the height to which it rises is calibrated to indicate to indicate temperature.

问答题翻译：The most common means measuring rate of flow of a fluid is based on the principle that if there is a contraction or constriction (a section of reduced diamater) in a pipe,the pressure of a fluid flowing down-stream from the contraction will be lower than that up-stream from the contraction.

问答题翻译：There are special types of valves designed to be operated by control instrument rather than by hand.

问答题翻译：Exploration methods falling in this category are those employing a physical measurement of subsurface conditions made from a surface location.

问答题翻译：Water and acid gases are removed from the wellhead gas stream because they can cause corrosion and other problems in long distance pipeline and associated equipment.