First , we put forward the concept of publishing ecology , which was defined as the science to study the interaction law and mechanism between publishing medium and its environment 本文从分析出版生态入手,提出了出版生态学的概念,认为出版生态学就是研究出版媒介与其环境,以及互为环境的出版媒介之间相互作用规律和机理的科学。
Some differences in value may be due to the omission of the fluid viscosity . the hydrodynamic interactions between two approaching or disparting spheroids , between two parallel torpedo - type or airplane - type platforms , between fore - and - afterward symmetrical uuv or platform and parent submarine have been investigated numerically , from which some interaction laws are drew 另外还进行了以下受力计算:两个相互靠近或远离的椭球体、鱼雷型平台在壁面或潜艇附近运动、飞机型平台在壁面或潜艇附近运动、首尾对称鱼雷状uuv与潜艇相对运动。