Geodetic leveling should be done with staves in which the divisions are marked on a strip of invar

 
  • 大地水准测量必须使用刻度标于不胀钢片上的水准标尺。
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  • 深远海浮式风电平台 - deep-sea floating wind power platform
  • 京雄高速公路 - Beijing-Xiongan expressway
  • 农业及相关产业增加值 - the added value of agriculture and related industries
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