A second type of galvanic corrosion occurs when a single type of metal encounters soils of varying composition.
当一种金属埋于组分不同的土壤内，就会产生第二类电池腐蚀。
What is the best type of resistor to use - metal film, carbon film, or carbon composition?
金膜电阻，碳膜电阻以及碳合成电阻哪一种最好？
What is the best type of resistor to use - metal film, carbon film, or carbon composition?
金膜电阻，碳膜电阻以及碳合成电阻哪一种最好？
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