These characteristics of the oils show th at they are typical lacustrine oils a nd should be derived from the Cretaceous source rocks, not from the Jurassic coal measures.
这些特征表明原油是典型的湖相原油，其主要的烃源岩是下白垩统湖相源岩而非侏罗系煤系烃源岩。
In this paper is briefly described a source language as used in the compiling system ND-7301.
本文扼要介绍了ND - 7301编译系统中所用的初始语言。
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