1)coal sampling,煤炭取样2)coal sampler,采煤取样机3)gas sampler,煤气取样器4)coal mechanical sampler,机械取煤样装置5)sampling plan of coal seam,煤层取样平面图6)Unified automatic coal sampler,煤炭联合自动制样机
用法例句
Based on the basic theory of hydraulic system, the trouble of hydraulic system of main arm for coal sampler is analyzed to find out the defects in the design and make out the maintenance schedule, thus the trouble removed and production going smoothly.
