This paper describes the structure and basic operating principle about the squeezed ma - chine of core of the long cylinder of main oil pipe of Cat, 121 diesel engine's body.
本文介绍了卡特匹勒121型柴油机机体主油管长圆柱坭芯挤压机的结构和基本工作原理。
Complex geological body is main types of complex oil and gas reservoir, and its irregular geometrical shape and acutely variable velocity have an effct upon the accurate imaging of complex reservoir.
复杂地质体是复杂油气藏的主要类型之一，往往表现为几何形态的不规则和速度纵横向的剧烈变化等，这些特征极大地加剧了复杂构造精确成像的难度。
The first chapter of this article briefly elaborated the Western oil painting scenery this main body evolution.
本文第一章简要论述了西方油画风景这一本体的演变。
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