钻井泥浆降失水剂
filtrate loss controller for drilling muds
钻井泥浆冷却系统
drilling mud cooling system
钻井泥浆配方
mud prescription for well drilling
电能量计量计费
power telemeter and settlement system
电能量计量计费系统
the System of Measuring and Billing of Power Energy
power energy billing system
tele meter reading system
telemeter reading system
大斜度井钻井解卡剂
high angle drilling lubricant