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beam collimator
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construct.
射
束准直仪器
el.
射［光］束准直仪
met.
射线束准直仪
;
射线束平行光管
tech.
光束准直仪
;
光束平行光管
;
束准直仪
;
束平行光管
beam collimator
:
1 phrase
in 1 subject
Chemistry
1
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