The dynamic change in grain nitrogen content showed a V shape, and S shape in nitrogen accumulation.

籽粒氮含量变化呈“V”型曲线，籽粒氮素积累呈“S”型。

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The method of measuring c, s, p, Mn, Si, Cr, Ni, Mo, V, W, ti, Nb, Al element content by DV-4 photoelectric spectroscope on one condition is introduced.

介绍了应用DV - 4光电光谱仪，仅用一种测定条件，测定高合金钢中碳、硫、磷、锰、硅、铬、镍、钼、钒、钨、钛、铌、铝元素的含量的方法。

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Chapter V is the emphasis and the core content of this article.

第五章是本文的重点，也是本文的核心内容。

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Many in the online industry are touting a new "platform for Internet content selection" (PICS) system that is a kind of V chip for the Internet.

CNN: Why Johnny Can't Surf

Use controls: Tools like the V-Chip or services offered by your cable provider let you block content you don't want your kids to see on TV.

CNN: Is media violence damaging to kids?