conversation of energy and darwinism are decided really, promoting statistical birth and development arrowroot er to ascend is one of statistical founders.
能量守恒和进化论的确定,促进了统计学的诞生和发展葛尔登就是统计学的奠基人之一。
the law conversation of energy and the hole diameter formula of jet perforating are employed to deduce the relationship of diameter and velocity of jet for cylindrical hole of perforation concrete.
文中根据能量守恒原理及侵彻孔径公式,推导了获得圆柱形穿孔的射流直径与速度的关系。
this text is based on the law of conversation of energy and state equation of gas to set up discriminants of behavior mode of hot - weighty gas in the state of static breeze.