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When the portable luminaire has a flexible or articulated arm, the arm is to be bent before the) Y. `8 F. t2 K0 Q6 ?: S
lamp is placed on the inclined plane, starting at the lower end of the arm, to form a quarter circle that a. E, N" D4 q( F) w+ q, W6 K
line joining the ends of the arm make an angle of 45 degrees with the horizontal. When a flexible or
9 Y( D1 i& e3 e; E* ?8 Qarticulated arm is off-center with respect to the base, the arm is to be bent in the direction that results in
4 z0 v4 Y1 b# s. etip over. When the unit has more than one flexible or articulated arm, one of the arms is to be adjusted
# n2 L3 i; c$ i' j W& \# v; Jas 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" K+ n f" p2 D3 k! T
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