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标准上有的:
" v# H6 H6 g; e$ o; _To allow for the fact that the average temperature of windings of universal motors, relays, solenoids and- t7 }+ K' n3 t% A4 H0 l8 Q3 E
similar components is usually above the temperature at the points on the windings where thermocouples are
S% [7 ~( m3 a% Fplaced, the figures without parentheses apply when the resistance method is used and those within! G# y# R" o) |' V' ~+ M4 Y! K
parentheses apply when thermocouples are used. For windings of vibrator coils and a.c. motors, the figures) r: J/ A- e% L4 |
without parentheses apply in both cases.
; w& I: T3 M A3 ^# Y7 c1 D/ U......) H `, F9 v8 h; b" `. Q
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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