由于每个离散通道是单向的，并且定时令牌方案避免各设备间同时交谈，因此不会出现以太网中的碰撞情况。
Because every discrete path is unidirectional and the Timed Token scheme keeps devices from talking at the same time, collisions don't occur as they do in Ethernet.
分析了封包绳提前断裂状态下降落伞系统的运动特性，建立伞舱组合体在拉直阶段的动力学模型，计算了主伞的运动轨迹，分析了拉出的主伞与伞舱口的碰撞情况。
Under the conditions of early rupture of the reefing lines, motion characteristics of parachute system were analyzed, and mathematic model of parachute-capsule system in the deployment was built.
研究人员们利用NASA戈达德航天中心（Goddard Spaceflight Center）的超级计算机模拟了柯伊伯带中75000个微粒的碰撞情况。
The researchers used a supercomputer at NASA's Goddard Spaceflight Center to simulate 75,000 particles bumping around the Kuiper belt.
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