应使量杯的主刻度线在量杯线路上至少延伸四分之三并对其编号。

The main graduation lines shall extend at least three quarters of the way around the graduate and shall be numbered.

youdao

应使量杯的主刻度线在量杯线路上至少延伸四分之三并对其编号。

The main graduation lines shall extend at least three quarters of the way around the graduate and shall be numbered.

youdao