A pair of aging stars discovered 3,000 light-years away is locked in a "dance" of death—a union that will end in their collision and a possible supernova, astronomers say.
科学家近日在距离地球3000光年的地方发现了一对衰老的双星。 据天文学家所言，它们陷入了一支“死亡舞蹈”——这支舞蹈注定会以两者的碰撞而告终，而在碰撞的过程中可能会形成一颗超新星。
The problem of collision detection between a pair of convex objects is summed up a problem of non-linear programming with restrict conditions in this paper.
将两凸物体间碰撞检测问题归结为一个带约束条件的非线性规划问题。
Twisted-pair implementations use a "jam" signal instead, whereby a station that detects a collision sends a signal to the hub, which in turn sends jams to all other devices connected to the hub.
双绞线方案则是采用“干扰”信号，这时检测到碰撞的站发送 信号给集线器，集线器再把干扰 信号发送给与集线器相连的其它所有设备。
Twisted-pair implementations use a "jam" signal instead, whereby a station that detects a collision sends a signal to the hub, which in turn sends jams to all other devices connected to the hub.
双绞线方案则是采用“干扰”信号，这时检测到碰撞的站发送 信号给集线器，集线器再把干扰 信号发送给与集线器相连的其它所有设备。
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