It is a known fact that a Cancer woman has terrible mood swings which coincides with the waxing and waning of the moon.
The early Romans used the moon as a guide to measure the months.
They have found that it is connected with the passage of days and the phases of the moon. It is, in fact, a primitive type of calendar.
圆缺孔板 segmental orifice plate ; BN-FBQ
盈亏圆缺 wax and wane
晶圆缺口去角取面机 wafer notch chamfering machine
晶圆缺陷 wafer defect
圆缺测流器 [流] segmental meter
生命总有圆缺 Life is not always satisfatory