傘かさ歯は車ぐるま

noun

bevel gear

A gear with teeth cut on a conical surface, used to transmit power between intersecting shafts. Technical term in mechanical engineering.

• 傘かさ歯は車ぐるまは、交こう差さする軸じくの間あいだで動どう力りょくを伝つたえるために