单词	neutral angle
释义	neutral angle 临界角
随便看	index-finger index finger discount index-fingers index fingers index forest Index-forest index format index formation index for selection index fossil index fossils index-fund index fund Index Funds index futures index futures contract index gage index gap index ga(u)ge index gauge index gear index gears index generation index glass index gradient 丢魂失魄丣两两1 两2 两3 两4 两世为人两两三三两全其美とっかえひっかえ【取っ替え引っ替え・取っ換え引っ換え】とっかえひっ換えとっかえひっ替えとっかえ引っかえとっかかりとっかかり【取っかかり（取っ掛かり）】とっかくとっかく【突角】とっかんとっかん