天然的黑色母贝表盘与小时刻度。

Natural black Mother-of-Pearl dial with hour markers.

youdao

计时，夜光指针和小时刻度；单向表圈，蓝宝石水晶表盘。

Chronograph; luminous hands and hour markers; unidirectional bezel; sapphire crystal dial.

youdao

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。

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

youdao