一些研究者认为是这样，在专业人员的帮助下，车库生物学家制定安全指导手册和标准更能被业余爱好者理解和接受。
Some researchers argue it does, with professionals helping garage biologists craft safety guidelines and standards that could be understood by the enthusiast.
这项研究表明，美国环境保护署(u.s. EPA)对其中114种污染物制定了最高法定安全标准，2004年到2009年期间，各大自来水公司92%的时间都达到标准。
U.S. EPA regulates 114 of those pollutants, setting maximum legal levels that water utilities achieved 92 percent of the time, according to the study.
本文采用动力非线性有限元法研究了钢筋混凝土面板堆石坝的地震反应，并用滑移面上的静、动应力求得坝坡抗震稳定安全系数时程曲线。
A study on the dynamic response of a rockfill dam with reinforced concrete facing excited by earthquake by means of nonlinear finite element method was presented in this paper.
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