Slack action

In railroading, slack action is the amount of free movement of one car before it transmits its motion to an adjoining coupled car. This free movement results from the fact that in railroad practice cars are loosely coupled, and the coupling is often combined with a shock-absorbing device, a "draft gear," which, under stress, substantially increases the free movement as the train is started or stopped. Loose coupling is necessary to enable the train to bend around curves and is an aid in starting heavy trains, since the application of the locomotive power to the train operates on each car in the train successively, and the power is thus utilized to start only one car at a time.

单词	Slack action
释义	Slack action 英语百科 Slack action In railroading, slack action is the amount of free movement of one car before it transmits its motion to an adjoining coupled car. This free movement results from the fact that in railroad practice cars are loosely coupled, and the coupling is often combined with a shock-absorbing device, a "draft gear," which, under stress, substantially increases the free movement as the train is started or stopped. Loose coupling is necessary to enable the train to bend around curves and is an aid in starting heavy trains, since the application of the locomotive power to the train operates on each car in the train successively, and the power is thus utilized to start only one car at a time.
随便看	take its toll的意思 take it that的意思 take it to channel的意思 Take It to the Bank的意思 Take It To The Limit的意思 take it to the next level的意思 take it to the street的意思 take it to the wire的意思 take it upon的意思 take it upon oneself的意思 take it upon yourself to do something的意思 take it upon yourself to do sth的意思 take it with a grain of salt的意思 takeji的意思 take joy的意思 take keep the pledge的意思 take kindly的意思 take kindly to的意思 Takeko的意思 takel的意思 take law as the criterion的意思 take law as the yardstick的意思 take lead的意思 take lease on的意思 take leave的意思