Beam hole


noun
a hole in the shield of a nuclear reactor through which a beam of radiation, esp of neutrons, is allowed to escape for experimental purposes

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    a rolling mill for roughing a bloom and rolling it into a shape.

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    a vacuum tube in which the stream of electrons flowing to the plate is focused by the action of a set of auxiliary, charged elements, giving an increase in output power.

  • Beam reach

    see under reach (def 27). to get to or get as far as in moving, going, traveling, etc.: the boat reached the sh-r-. to come to or arrive at in some course of progress, action, etc.: your letter never reached me. to succeed in touching or seizing with an outstretched hand, a pole, etc.: to […]

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