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When the portable luminaire has a flexible or articulated arm, the arm is to be bent before the! f" n& W6 |8 V* M1 B$ J
lamp is placed on the inclined plane, starting at the lower end of the arm, to form a quarter circle that a
1 S* d7 P% ?, j5 e! b& c% O1 t5 qline joining the ends of the arm make an angle of 45 degrees with the horizontal. When a flexible or
' i0 z* J: N9 h+ |. i Darticulated arm is off-center with respect to the base, the arm is to be bent in the direction that results in
# R- A" d8 u4 _& Etip over. When the unit has more than one flexible or articulated arm, one of the arms is to be adjusted/ }) g& ~2 i: }5 n" C, x5 ?
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, Y' l$ H3 O( \2 o
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