When you use the wiring laying underground pipe, wire in the pipes should be joint and kink.
布线时要用暗管敷设，导线在管内不应有接头和扭结。
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When the valves don't work properly, blood gets stuck, causing the vein to swell and kink.
当阀门不正常工作时，血液不能流动，导致血管膨胀和扭结。
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The qualitative theory of ordinary differential equations and numerical simulation method were employed to investigate the kink waves of a nonlinear quartic wave equation.
