单词	环圆环面
释义	同环形线--环圆环面
随便看	oil catcher oil catcher (oil dish oil catcher (oil dish, oil pan, drip pan) oil catch-ring oil cavity oil cell oil cell dot oil-chalk test oil chamber oil change oil channel oil channel (oil groove) oil circuit oil circuit breaker oil circuit-breaker oil circuit breaker（ocb） oil circulating pump oil circulating reactor oil circulation oil circulation cooling oil-circulation cooling oil circulation pump oil circult breaker oil circult breaker{=ocb} oil circultion cooling