On the basis of analyzing the control step for ice conversing to hydrate and introducing the sign function, the unreacted core shrinking model for hydrate formation was proposed.

在对冰转化为水合物控制步骤分析的基础上，引入符号函数并提出一个改进的未反应核收缩模型来描述冰转化为水合物的动力学。

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The call to the preg_replace() function replaces the dollar sign, any whitespace, and every comma with the empty string, yielding what's supposed to be an integer.

调用 preg_replace() 函数将用空字符串替换美元符号、所有空格和每个逗号，生成认为是整数的内容。

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File checking occurs in the check function and simply looks for files ending with a tilde (~) or pound sign (#), beginning with a pound sign, or ending with the extension .pyc.

文件检查发生在 check 函数中，仅简单地检查以波浪号（~）或者井号（#）结束的文件，以井号后开始或扩展名 .pyc 结束的文件。

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And the reason that we now on the second line have the equal sign is because this function GetString has what's called a return value.

我们之所以,在第二行代码GetString前面加上等号,是因为这个函数会带回一个,返回值。

哈佛公开课 - 计算机科学课程节选

Now in its nineteenth version, though, it's finally getting a desktop, making it look and function a little more like a traditional OS. When you sign in for the first time, you'll see an expanse of wallpaper, with a row of apps pinned to the bottom of the screen -- not unlike the Taskbar in Windows 7.

ENGADGET: Chrome OS review (version 19)

Not only did it improve patients' lung function, it lowered the amount of salt in their sweat, a sign that it may combat CF at its biological root.

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