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When the portable luminaire has a flexible or articulated arm, the arm is to be bent before the
5 k+ Z4 C% k% g2 Q2 b( }) Plamp is placed on the inclined plane, starting at the lower end of the arm, to form a quarter circle that a, b8 n5 H9 r4 ~( h6 Z- I
line joining the ends of the arm make an angle of 45 degrees with the horizontal. When a flexible or
8 O3 ^3 y2 J' _articulated arm is off-center with respect to the base, the arm is to be bent in the direction that results in+ [6 D% S+ V/ y! U- `+ R
tip over. When the unit has more than one flexible or articulated arm, one of the arms is to be adjusted8 W# n. T# P% i
as for a unit having a single arm, and the other arm or arms are to be extended vertically.
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英文不好,如图示灯怎么操作呢5 \- ]( f2 ], @% `( \ i
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