单词	self-acting
释义	self-acting /sɛlfˈaktɪŋ / adjective archaic (Of a machine or operation) acting without external influence or control; automatic: this being a self-acting incline the empty trucks were dragged up by the full ones... Precision manufacture of interchangeable parts led to greater and greater division of labor and the invention of self-acting machines that could be operated by workers with less training and experience than traditional craftsmen. After 1825, when the self-acting mule spinner automated the process, spinning 100 pounds of cotton took 135 hours.
随便看	pulverescent pulverise pulverizable pulverization pulverizator pulverize pulverizer pulverous pulverulence pulverulent pulverulentous pulverulous pulvil pulvilio pulvillar pulvilliform pulvillus pulvin pulvinar pulvinate pulvinated pulvinately pulviniform pulvino pulvinule

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