The principle and structure of a life-saving ball system(referred to as ball for short hereinafter)were introduced.
介绍矿难救生球系统(简称球)的原理及结构,构建巷道空间和球的分析模型,运用数值分析的方法,分别选择3种球体材料和3种球体厚度进行计算,对该系统在瓦斯爆炸冲击波作用下的动态响应进行研讨,分析冲击波作用下球表面的变形、等效应力、等效塑性应变以及球体材料、厚度等因素对球动态响应的影响。
Special defensive skills include the dig, the sprawl,the roll and the pe.
专门的防守技术有垫球，倒地救球，滚翻救球，鱼跃救球。
Special defensive skills include the dig, the sprawl, the roll, and the pe.
专门的防守技术有垫球、倒地救球、滚翻救球、鱼跃救球。
He ran forward auickly to save it.
他快速跑向前去救球。
They always seemed to be saving the ball rather than spiking it.
她们似乎总是宁愿救球也不愿意扣球。
Yes, her skills of passing, digging and ping are outstanding.
是的，她的传球、垫球和救球的技能都很突出。
Get one's service in save
救球（指阻止对方得分而做的动作）
the goalie made a brilliant save; the relief pitcher got credit for a save.
守门员有一次精彩的救球。
Our Earth?Our Future?Just Save It!
拯救地球就是拯救未来！
Global Youth Earthsaving Summit
全球青年拯救地球首脑会议(全球救地会)
brucker survival capsule
自给自航球形救生艇
It was fatal to run after a fast ball.
救急球是很危险的。
GMDSS - Global Marine Defense Safe System
全球海上安全救助系统
This Is No Way to Save the Earth
拯救地球，此法不通
On the Evolution of the Belief of Mazu in Ryukyu From the Perspective of the Legend of "Saving the Brother Rather Than the Father;
从“救兄未救父”的传说看妈祖信仰在琉球的嬗变
global seminar on maritime search and rescue system
海上搜索救援系统全球讲习班
The goalkeeper brought off a superb save.
守门员漂亮地救出了险球.
retrieved the Ball from the end zone
努力地从端线处救那个球
The goalie manage to save a shoot strike at close range
守门员救起一个近距离射的球