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标准上有的:
7 ^" _3 I% B1 N5 b! \# ETo allow for the fact that the average temperature of windings of universal motors, relays, solenoids and: J% w# ~ a$ K/ d5 s+ F
similar components is usually above the temperature at the points on the windings where thermocouples are
. {% M/ S* m, Gplaced, the figures without parentheses apply when the resistance method is used and those within
+ x6 j/ _- F/ y: m* g# Wparentheses apply when thermocouples are used. For windings of vibrator coils and a.c. motors, the figures+ v% k& [7 n" X5 I
without parentheses apply in both cases.( a* B7 I5 T; v, H% \" Y$ r
......
: Y7 A8 L: R! ?! p- E& x1 C简单来说,基本上括号内的适用于热电偶发,括号外适用于电阻法 |
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