Artificial digging hole for RC piles
automatic injector for tree trunk
drill hole for in-situ leaching
measurement for tree height
Observation hole for water level
open hole for excavating to non-opening
planting broadleaved tree for Chinese fir sprouting
Polyester Fibre for for spinning
rainfall collecting for tree planting
resource base for tree peony cultivars
Technology hole for core cleaning
artificial hole digging pile
Digging hole pouring pile
digging hole stake with manpower
rock drilling and hole digging
V digging hole cross blasting network
a high regard for Confucian classics and a low regard for commentaries