If some care and support sprocket wheels running status can not continue to use, it may cause partial grinding wheel, but also probably caused by the wear trackchain.
若在部分托链轮和支重轮无法运转的状态下继续使用,则可能导致滚轮磨偏,同时还可能造成轨链节的磨损。
2
Studies that tried to track how chain letters propagate by email suffered from selection bias because they included only posts that had been "fossilized" on newsgroup archives.