问题描述：
英语翻译
Magnet force-stroke curve for bottom nameplate
voltage and solenoid temperature of 90
VA-stroke curve for top nameplate voltage,20 ambient
If plunger works with gravity:
stroke force= magnet force+ plunger weight force.
If plunger works against gravity:
stroke force= magnet force - plunger weight force
Magnet force-stroke curve for bottom nameplate
voltage and solenoid temperature of 90
VA-stroke curve for top nameplate voltage,20 ambient
If plunger works with gravity:
stroke force= magnet force+ plunger weight force.
If plunger works against gravity:
stroke force= magnet force - plunger weight force
问题解答：
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