BATTERIES FOR MINING LOCOMOTIVES FOR MINES SUSCEPTIBLE TO FIREDAMP.
易受沼气影响的矿山机车用电池

1981-12-15

BATTERIES FOR MINING LOCOMOTIVES FOR MINES SUSCEPTIBLE TO FIREDAMP. PROT, BY PLATE PILES.
易受沼气影响的矿山机车用电池 保护 通过板桩

1981-12-15

BATTERIES FOR MINING LOCOMOTIVES FOR MINES SUSCEPTIBLE TO FIREDAMP. CELL VIBRATION TESTS.
易受沼气影响的矿山机车用电池 细胞振动测试

1981-10-15

BATTERIES FOR MINING LOCOMOTIVES FOR MINES SUSCEPTIBLE TO FIREDAMP. MEASUREMENT OF THE TRAY INSULATING COATING AND OF BATTERY CONTAINERS.
易受沼气影响的矿山机车用电池 托盘绝缘涂层和电池容器的测量

1981-12-15