Now, this is still a little bit cumbersome, in part because of the variables involved, s including s.
但是这个方法还是有一些笨拙，部分是因为所涉及的变量，包括。
If you look in the Variables view, you see the string variable s, which is equal to null.
如果查看Variables视图中的字符串变量s，会发现它等于null。
Using data tracking 120,877 healthy U. S. men and women for 12 and 20 years, researchers surveyed lifestyle variables such as exercise, TV time, sleep and alcohol use.
研究人员在12至20年内追踪调查了12877名健康的美国人，调查了他们的生活方式，比如体育锻炼、看电视时长、睡眠状况和饮酒与否。
Stochastic inventory system of (s, s) Policy, of which both the demanded quantity and time between demands are random variables, was discussed.
讨论了需求量、需求发生的间隔均为随机变量的(s, s)策略随机存储系统。
Various grades of HDPE 's unique characteristics are the four basic variables of the appropriate combination of: density, molecular weight, molecular weight distribution and additives.
各种等级HDPE的独有特性是四种基本变量的适当结合：密度、分子量、分子量分布和添加剂。
Various grades of HDPE 's unique characteristics are the four basic variables of the appropriate combination of: density, molecular weight, molecular weight distribution and additives.
各种等级HDPE的独有特性是四种基本变量的适当结合：密度、分子量、分子量分布和添加剂。
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