extinctionn.消失；消减；废止extinction ofr obligation债(务)的消灭extinction characteristic消光特性extinction of light curve光曲线消退extinction in finite time熄灭extinction of wild animals野生动物绝种extinction of colour curve色曲线消退extinction characteristics遮蔽Extinction of Maritime Lien船舶优先权消灭extinction moisture content熄灭含水量<一种可燃物的含水量extinction recycle operatio全循环操作