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When the portable luminaire has a flexible or articulated arm, the arm is to be bent before the! G# A" O. a) x) z2 V
lamp is placed on the inclined plane, starting at the lower end of the arm, to form a quarter circle that a# {- |2 s. B# y3 o; ?* F
line joining the ends of the arm make an angle of 45 degrees with the horizontal. When a flexible or
6 s8 B2 E$ B1 N+ G# e# yarticulated arm is off-center with respect to the base, the arm is to be bent in the direction that results in8 ^8 m: H ?2 X9 ]6 T# X4 B
tip over. When the unit has more than one flexible or articulated arm, one of the arms is to be adjusted
( O- x, f- B0 S$ Y4 vas for a unit having a single arm, and the other arm or arms are to be extended vertically.& X; O0 ]$ P1 c2 J4 R
, t# p9 u0 ?6 E, d7 Z, |3 m英文不好,如图示灯怎么操作呢1 F7 K: ]* h f( l( }/ c0 @: U
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