Therefore, it's a good habit to use a waitForExistence method when you open a browser. One way to do this is to use a Wait for Selected TestObject verification point

因此，当您打开一个浏览器时使用 waitForExistence 程序是很好的办法。

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Through the comparison of the selection methods for the schemes of the air-conditioner heat and cool sources, the ideality point method is selected for its simple and practical merit.

通过对空调冷热源方案选择方法的研究比较，说明理想点法是适合其选型的简单而适用的决策方法。

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Linear regression equation is analyzed by using indirect error-smoothing, and nonlinear regression equation is optimally selected by using the method of comparison of mid-point of curve.

用间接观测平差法分析线性回归方程，用曲线中点比较法选择最优非线性回归方程。

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