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掘进工作面凿岩机的风截门和水截门,在爆破后经常损坏。检修班工人用自制的风水两用开关(附图)代替截门,分别接在凿岩机的风、
Drilling face rock drilling machine wind cut-off and water cut-off, often damaged after blasting. Overhaul workers with home-made Feng Shui dual switch (with photos) instead of cut-off, were connected to the rock drill wind,