Massive projectiles striking much larger bodies create various kinds of craters, including multi-ring basins—the largest geologic features observed on planets and moons.
巨大的抛射物撞击更大的天体，创造了各种各样的陨石坑，包括多环盆地——这是在行星和卫星上观察到的最大的地质特征。
Massive projectiles striking much larger bodies create various kinds of craters, including "multi-ring basins"—the largest geologic features observed on planets and moons.
大量的抛射物撞击更大的天体，形成各种各样的陨石坑，包括“多环盆地”——在行星和卫星上观察到的最大的地质特征。
The differences in the penetration mechanism between cuspidal and blunt projectiles are studied.
研究了尖头、钝头弹在侵彻机理上的差异。
He observed somebody hit a tennis ball and wondered about the paths of projectiles.
他看到别人打网球就会思考网球的行进路线。
And something else unprecedented happened: small projectiles launched from the planet escaped the biosphere.
另外一些前所未有的事情也发生了：从地球上发射出去的小型抛射体逃离了我们的生物圈。
Some projectiles can be blocked or reflected.
一些投射物可以被格挡或反弹。
Destroys projectiles passing through this area.
摧毁所有通过范围内的射弹。
A few projectiles auto-track the target as it moves.
一些投射物会在移动过程中自动跟踪目标。
Ballistics: the study of the dynamics of projectiles.
弹道学：关于射弹动力学的研究。
Ballistics: Science of propulsion, flight, and impact of projectiles.
弹道学：研究射弹的动力、飞行和弹著作用的科学。
Most projectiles can be avoided or intercepted, such as by walls or other players.
绝大多数投射物都可以被避免或拦截，比如说墙或者其他玩家。
This paper introduces a system for the measurement of the engraving process of projectiles.
本文提出了一种用于弹丸挤进过程的测试系统。
The aerodynamic shape of projectiles strongly influences their performance on ballistic trajectory.
弹丸的气动外形对其外弹道性能有重要的影响。
It covers kinematics (including projectiles), rotational kinematics, mechanical energy, and optics.
内容涵盖了运动学(包括弹丸)，旋转运动，机械能和光学。
Normal penetration of tungsten alloy hollow projectiles into steel and concrete targets were performed.
进行了钨合金空心弹体垂直侵彻钢靶板和混凝土靶板的实验。
The air-stream could send projectiles through the air posing a hazard for any person or object in its path.
气流的冲击力可能会伤及任何在其前方的人或物体。
The effects of frication, air frication on the speed and trajectory of projectiles have been fully considered.
主要考虑了摩擦力、空气阻力等因素对弹丸的速度和轨迹的影响。
We conduced penetration experiments into reinforced concrete targets with ogive-nose kinetic energy projectiles.
利用火炮发射动能弹，对钢筋混凝土靶进行正侵彻和斜侵彻试验。
Even the tiniest pieces move through orbit at speeds fast enough to turn them into potentially deadly projectiles.
即使是最微小的物体，如果以足够快的速度在轨道上移动，也能成为潜在的致命抛射物。
It is necessary to get the exterior trajectory datum in the process of de-signing and improving of the pinning projectiles.
在高速旋转弹丸的设计改造过程中，需要获取外弹道数据。
The results show that, with a relatively low impacting velocity, plastic deformations occur at the noses of the projectiles;
实验结果表明，当撞击速度较低时，弹体头部发生镦粗变形；
This paper mainly studies how to accurately fit the air dynamics parameter by the ballistic data of projectiles' free flight.
论文主要研究从弹丸自由飞行数据中如何准确地拟合空气动力系数。
Fins is able to enhance flying stability of shaped charge projectiles, so it is very important to study the way to form fins.
尾翼可以提高聚能侵彻体的飞行稳定性，如何形成有一定规律性的尾翼在聚能侵彻体的研究中具有重要意义。
Magazine system is the complex macaronis system that replenishes and feeds the projectiles for the firing system of the naval gun.
弹库系统是向舰炮发射系统补弹、供弹的复杂机电系统。
It was light, portable and able to withstand projectiles launched by early firearms. So it prevailed during Ming and Qing Dynasties.
绵甲轻便，并能防御早期火器所发射弹丸的伤害，故在明清时期较为流行。
This paper examines the failure modes of ductile metal plates subjected to impact by rigid flat-ended projectiles at normal incidence.
对延性金属靶板在刚性平头弹丸正撞击下的破坏模式进行了研究。
It is indicated that this method can improve the velocity measurement accuracy of flying projectiles base on skyscreen measuring principles.
根据天幕靶测速原理，该检测与提取方法可以提高系统测速精度。
The results show that when size effects occur, the interactions between projectiles and targets don t accord with geometrical similarity law.
结果发现，有尺寸效应后，弹体与靶板相互作用时不符合几何相似。
Presents a weighted function model for the flight traJectory of projectiles, oriented for applications with computers in modern fire control systems.
建立了可用于现代火控计算机的火控弹道权函数法模型。
Presents a weighted function model for the flight traJectory of projectiles, oriented for applications with computers in modern fire control systems.
建立了可用于现代火控计算机的火控弹道权函数法模型。
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