English translation for "prefocused beam"

预聚焦束

Similar Words：

"prefocus cap" English translation, "prefocus lamp" English translation, "prefocus lamp base" English translation, "prefocus lens" English translation, "prefocus plate" English translation, "prefocusing" English translation, "prefocusing lens" English translation, "prefoetal period" English translation, "prefolding" English translation, "prefoliation" English translation