常见例句Keywords gear stand;cheveron gear shaft;repair;failure;heat transmitting; 齒輪座;人字齒輪軸;脩複;斷裂;熱裝;cheveron notch 山型缺口cheveron gear 人字齒輪evron (cheveron) 鋸齒飾cheveron ring 人字密封圈, V型圈 返回 cheveron