To argue the distance between mold end and castings, the wax pattern block was set.
为增大模头与铸件的距离，常用垫蜡块的方法。
The main features of the crude oil in fault block Shen 84 of Shenyang oil field are high wax content, high pour point, and low contents of gum and asphaltine.
沈阳油田沈84断块原油的主要特点是高含蜡、高凝固点，低胶质和低沥青质含量。
On the basis of study about the forces on the PIG and the principle of PIG running in wax crude oil pipeline, to analyze the reason of PIG block accidents and to give measures.
研究清管器在含蜡原油输送管道中的受力情况和运行规律，分析发生清管器卡堵事故的原因并提出相应措施。
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