The boll development and formation of "Kemian 2" with high quality was studied in this paper.

以高品质棉“科棉2号”为材料，研究高品质棉的棉铃发育及形成规律。

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This paper discusses the features of development and formation of the Pearl River System, based on plate theory and arcuate structure.

本文根据大地弧形构造及板块理论研讨珠江水系的发育、形成特点。

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Over the past century and a half, however, studies in the history of human development have shown that the formation of culture is part of the biological adaptation.

然而，在过去的一个半世纪里，对人类发展史的研究表明，文化的形成是生物适应的一部分。

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The dramatic migration pattern can be chalked up to the rapid development of an oil- and gas-rich shale formation in the western part of the state.

FORBES: North Dakota Leads List Of America's Fastest-Growing States

This is too bad, since a state whose unemployment rate still lags the national average could really use the thousands of jobs and billions of dollars in economic impact that would be generated by development of the portion of the prolific Marcellus Shale formation that underlies much of the southwestern quarter of the state.

FORBES: Keystone XL and New York Fracking Delays - "Mass Hysteria!"

"Maria oversaw the formation of this trust, bringing together three disparate organisations into one service, and its subsequent development, " he said.

BBC: Maria Ball