Beam At The Crossroads 那个十字路口
shine a beam at 对…射出光束
Beam diameter at aperture 出光孔处光斑直径 ; 光束直径 ; 出口光斑
green beam at nm nm绿光
beam fixed at both ends 两端固定梁
box beam at stage door 台口箱形梁
beam fixed at one end 一端固结的梁 ; 一端固定梁
He pointed the torch beam at the floor.
他把手电筒光束指向地板。
The machine directs a powerful beam at the affected part of the body.
这种机器将很强的射线对准身体感染部位。
During tests over several days, the pointer or tracker tracked an IR source and directed a laser beam at that source.
在几天的测试中，指示器或跟踪器跟踪一个红外光源，并引导激光束击中目标。
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