a beam of light造句
Reflection of
a beam of light on the diaphragm falls on a phototransistor.
经膜片反射的光束照射到光敏管上.
A beam of light produced by a laser can weld metals.
激光器发生的光束可以焊接金属.
A beam of light produced a laser can weld metals.
激光器发生的光束可以焊接金属.属类:[综合句库]-[-].