释义 |
- n.(穆斯林)圣人,圣徒;苏菲派大师的头衔
- n.(Pir)(乌克兰、俄、英、美、土)毕尔(人名)
短语 - 1
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PI-R控制器proportional-integral-rate controller - 3
- 1
Methods:A sample of 113 students, including spring buds' 30, non-spring buds' 30, and middle schools' 43, was tested by NEO-PI-R, CAPI, EMBU and Self-concept scale. 方法:以北京市某校春蕾班、非春蕾班学生各30名和中等学校43名学生为调查对象,采用EMBU、自我概念量表、NEO-PI-R和CAPI中的人际关系量表进行问卷调查。 - 2
a perfectly spherical shell dr at some distance, thickness, d r, dr we talk about it as 4 pi r squared d r, so we just multiply that by the probability density. 在某个地方的完美球型壳层,厚度,我们把它叫做4πr平方,我们仅仅是把它,乘以概率密度。 - 3
So if we want to talk about the volume of that, we just talk about the surface area, which is 4 pi r squared, and we multiply that by the thickness d r. 如果我们要讨论它的体积,我们要用的是表面面积,也就是4πr的平方,乘以厚度dr
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