大地水準面 dà dì shuǐ zhǔn miàn

DEFINITIONS

  1. geoid

CHARACTERS

大 dà
HSK 1
big, great, vast, large, high
地 dì
HSK 3
earth; soil, ground; region
水 shuǐ
HSK 1
water, liquid, lotion, juice
準 zhǔn rule, guideline, standard
面 miàn
HSK 1
face; surface; plane; side, dimension