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beam building
梁式锚杆支护法
矿业
beam building
beam burst
beam caliper
beam calliper
beam camber
beam cancellation
beam candiepower
beam candlepower
beam carving machine
beam casing
beam catcher
beam cathode
beam ceiling
beam center
beam centering
beam centre
beam centring
beam centroid
beam channel
beam chemistry
beam chopper
beam clamp
beam clipper
beam collimation
beam collimation optics
beam collimator
beam column
beam column construction
beam column structure
beam combiner
beam communication
beam communication set
beam compass
beam compasses
beam component
beam compression factor
beam conductance
beam configuration
beam confining electrode
beam control
beam control apparatus
beam controlling comp...
beam convergence
beam converter
beam cooling
beam coordinate
beam core
beam corridor
beam counter scale
beam coupling
beam coupling coeffic...
beam coupling factor
beam crane
beam cross section
beam crossing angle
beam crossover
beam current
beam current adjustment
beam current blanking
beam current control
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