常用的直滑电位器外壳材料有黄铜、钢、铝合金和塑料等。
Commonly used housing materials are brass, steel, aluminum alloy and plastic.
直滑电位器外壳应具有机械强度高，耐腐蚀和防潮等特点。
Enclosure shall have high mechanical strength, corrosion resistance and moisture characteristics.
直滑电位器外壳应具有机械强度高，耐腐蚀和防潮等特点。
Enclosure shall have high mechanical strength, corrosion resistance and moisture characteristics.
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