These ships are based on the Chinese Jiangwei II class frigates.

这些战舰是基于中国的江卫ii型护卫舰。

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Common derivatives and integrals - Here is a set of common derivatives and integrals that are used somewhat regularly in a Calculus I or Calculus II class.

常用求导公式和积分公式-这个系列的小抄囊括了微积分i级和II级课程常用的求导和积分公式。

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She was so late that she missed almost all of her favorite class, Algebra II.

等她赶到学校，已经太晚了，她差点就错过了自己最喜欢的课程——高等代数。

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They have a formula that defines how much Tier I and Tier II capital a bank has to hold and the amount depends on the risk class of their investments.

有一个公式可以计算出,一个银行到底需要持有多少一级和二级资本,其数量取决于他们投资项目的风险等级

耶鲁公开课 - 金融市场课程节选

Below the 68ft-tall Cumberland Falls, about 110 miles south of Lexington in Cumberland Falls State Park, there are simple places to practice white water rafting -- most of the rapids are Class II or Class III, and the rapids are well spaced out.

BBC: Adventure travel in eastern Kentucky

Moreover, the FDA proposes to reclassify sunlamp beds from class I (low risk) to class II (moderate risk) and require manufacturers to meet prescribed exposure tolerances.

FORBES: If Tanning Beds Were A Drug, They'd Be Illegal

And in the 1940s, during World War II, officials made the class tax a mass tax by introducing withholding and shrinking the exemption.

FORBES: Little Big Tax -- History's Warning