The composition of oxygen isotope is a good tool to trace the origin and formation environment of sulfate.

氧同位素组成是一个非常有效的示踪硫酸盐的起源和形成环境的工具。

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The studying gives the microscopical evidences for research on the tonstein's genesis and coal formation environment.

此项研究可为探讨高岭石夹矸的成因及成煤环境提供微观依据。

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Geochemical characteristics of two types of gabbro suggest that their formation environment is an oceanic ridge of low spreading rate.

两类辉长岩的地质地球化学特征表明它们可能形成于慢速扩张的洋脊环境。

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Through the publication of reports on new business formation and the entrepreneurial environment, lawmakers will be better equipped to encourage entrepreneurship with the most successful policies.

FORBES: Can Startup Act 3.0 Reboot Entrepreneurship And America?

"Regardless of this firm's expertise on purely technical matters unrelated to policy formation, Ecology and Environment's participation in a trade association and lobbying effort in support of authorizing high-volume hydraulic fracturing in New York fundamentally disqualifies the firm and its work" for the DEC environmental impact study, Russ Haven of the New York Public Interest Research Group said in a statement released Wednesday.

WSJ: NY groups claim industry bias in fracking study

He wants to see an immediate reduction in pesticide use until the effects are better understood, and is pressing for the formation of a European Union environment unit to study the problem.

BBC: By BBC News Online's Environment Correspondent Alex Kirby