煤量计 coal meter

煤耗计量表 consumption gauge ; coal-consumption gauge

煤气计量 gas measurement

煤计量机 coal meter

煤气流量计 RXSBL

煤灰含量计 coal ash content meter

耐压式计量给煤机 Pressure mode weighing coal feeder

煤量计量 metering of coal quantity

煤炭计量 coal measurement