3 螺杆和
经过氮化处理，具有足够的强度和耐磨性。
3 The screws and bushes are subjected to nitrogenation treatment to get enough strength and wear-resistance.
3 螺杆和经过氮化处理，具有足够的强度和耐磨性。
3 The screws and bushes are subjected to nitrogenation treatment to get enough strength and wear-resistance.
声明：以上
句、词性分类由互联网资源自动生成，部分未经过
核，其表达内容亦不代表本软件的观点；若发现问题，欢迎向我们指正。
