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When the portable luminaire has a flexible or articulated arm, the arm is to be bent before the
0 s5 H4 U2 e9 A& V+ }6 t) B7 s& jlamp is placed on the inclined plane, starting at the lower end of the arm, to form a quarter circle that a
9 n+ A& }- h* m0 t- r9 w0 b# cline joining the ends of the arm make an angle of 45 degrees with the horizontal. When a flexible or* |6 g( g" Y! w) O
articulated arm is off-center with respect to the base, the arm is to be bent in the direction that results in' n: U7 @7 q* V, K1 J
tip over. When the unit has more than one flexible or articulated arm, one of the arms is to be adjusted
' G5 m2 p( R: n" W+ d1 x. h, has for a unit having a single arm, and the other arm or arms are to be extended vertically.
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# J! P& H2 A& A; o: }" @英文不好,如图示灯怎么操作呢( m; F( ?- X0 u1 w, k( g
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