principal datum

常见例句

双语例句

• The deepest point is 66metres below Principal Datum in Lo Chau Mun (Beaufort Channel) north of Po Toi Island.
  最深的地方则位于蒲台岛以北的螺洲门，低于海拔66米。
• The performance, characteristics and principal technical datum of GSS-800 consumable electrode water jet semiautomatic underwater cutting apparatus are also outlined.
  扼要介绍了GSS-800型半自动熔化极水喷射水下电弧切割设备的性能，特点和主要技术参数。
返回 principal datum