Two glass windows located inlet of coal feeder for watching running line of belt.
Two glass windows located inlet of coal feeder for watching running line of belt.
两个玻璃观察窗位于给料机进口端（端门），用于观察胶带运行状况。
Two glass windows located inlet of coal feeder for watching running line of belt.
两个玻璃观察窗位于给料机进口端（端门），用于观察胶带运行状况。