• 1. SIGN function: 符号函数 | 正负号函数 | 符号功能 | 记号功能
• 2. Kronecker sign function: 克罗内克符号函数
• 3. matrix sign function: 矩阵符号函数

更多释义

• 1.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。
  dict.yoduao.com
• 2.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。
  dict.yoduao.com
• 3.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。
  dict.yoduao.com

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