电力机车主变压器采用强迫油循环吹风冷却方式，其发热计算较为复杂和困难。
Since primary transformer of electric locomotive adopts the forced oil-circulation cooling method, its heating computation is rather complicated and difficult.
特点：周边发热，升温快。油衡温，连续转印无色差。
Features: around heating, heating up fast, steady oil temperature, continuous printing without chromatic aberration.
减少固体颗粒对液压油的污染，防止液压冲击和系统发热是防止和减少系统故障行之有效的方法。
The effective method preventing and reducing the defects is to decrease the solid particles for the pollution of hydraulic oil and to avoid the impact and overhead of system.
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