[机] 普通轴承,滑轴承 needle roller thrust besring: 推力滚针轴承it is plain that: 平平的aggradated plain (aggradation plain): 加积平原;填积平原aggradation plain (aggradated plain): 加积平原;填积平原delta plain(daltaic plain): 三角洲平原下载手机词典可随时随地查词查翻译