通过压力与速度的相位分析，验证了瑞利准则（Rayleigh criterion）是维持Rijke管自激热声不稳定的关键因素；同时，模拟结果给出了Rijke管内的振荡流场和振荡温度场，实现了热声不稳定的可视化。
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关于入区准则的有利影响已成为教科书案例(其利端不言而喻)。
It is a textbook case of the beneficial effects of meeting the entry criteria.
可以说，正是那种冲突，那种我们可以称之为世俗理念与纯洁无知之间，的冲突，是马基雅维利道德准则的核心所在。
And it is that conflict, as it were, between what we might call worldliness and innocence that is the core of Machiavelli's moral code.
利用格利菲思强度准则和断裂力学原理求得了混凝土类脆性材料裂缝端部微裂缝区的边界方程。
A boundary 's equation of microcrack region near crack tip of such brittle materials as concrete has been obtained according to the Griffith' s criterion and fracture mechanics.
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