3.They are surveying the land before it is divided into house lots.
他们要在土地被分割为住宅用地前先勘察这块土地。
4.It's a mean of geotechnical investigation, including borehole surveying, costeaning, trenching exploration, test pitting, hole exploration, geophysical exploration and penetration sounding.
岩土程勘察的一种手段,包括钻探、井探、槽探、坑探、洞探以及物探、触探等。
5.The no staff and self-reducing tacheometer is a new type of surveying instrument designed and constructed by a group of teachers and students of our department.