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When the portable luminaire has a flexible or articulated arm, the arm is to be bent before the' K" b. S: ^; W$ |% S' p; B- @) ^3 S
lamp is placed on the inclined plane, starting at the lower end of the arm, to form a quarter circle that a
) W- {9 j9 C3 @" w3 h# hline joining the ends of the arm make an angle of 45 degrees with the horizontal. When a flexible or, s, w* r6 |4 H1 ]3 x
articulated arm is off-center with respect to the base, the arm is to be bent in the direction that results in
: R0 a) r- Z& [. ytip over. When the unit has more than one flexible or articulated arm, one of the arms is to be adjusted
1 m, g' q/ ]& H- ^as for a unit having a single arm, and the other arm or arms are to be extended vertically.9 J1 ~8 O1 i% _, o0 @5 d5 |! C
9 H8 u6 w7 Z7 e) X英文不好,如图示灯怎么操作呢& w% K# d: E9 V; ^ _0 h. @+ W0 B
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