Chemical synthesis comes with many disadvantages like the low yield, instability of product quality and high cost.
化学合成法存在收率低、产物不稳定以及合成成本高等缺点；
The strength reduction FEM is applied to the stability analysis of slope. The basic principle of this method and the definition of safety factor, yield rule and instability criterion are discussed.
将有限元强度折减法应用于边坡稳定分析中，探讨了该方法的基本原理、安全系数的定义、屈服准则和失稳判据等。
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