刻度环

graduation day───毕业日

graduation days───毕业日

production string───采油管；油层套管

graduation ceremony───n.毕业典礼

graduating───v.毕业（graduate的现在分词形式）；刻度；n.毕业情怀

graduation───n.毕业；毕业典礼；刻度，分度；分等级

graduations───n.毕业典礼（graduation的复数）

graduation ceremonies───n.毕业典礼

granulation tissue───[外科]肉芽组织

0 hour" on the R. A. and hour graduation ring to the R. A. indicator after loosening the graduation-ring setscrew.───松开赤经兼小时刻度环的定位螺丝后把赤经兼小时刻度环“0小时”位置对准赤经指示箭头。

Unfasten the R. A. clamp and turn the telescope around the polar axis to set the observing date on the date graduation ring to the observing time on the R. A. and hour graduation ring.───松开赤经制动钮并使望远镜围绕极轴旋转用以设置日期刻度盘上的观测日期对准赤经兼小时刻度盘上的观测时点。

Set "0 hour" on the R. A. and hour graduation ring to the R. A. indicator after loosening the graduation-ring setscrew.