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Of working cold trough: stainless steel cold trough, the double-layer vacuum glass observation window.
工作冷槽：不锈钢冷槽，双层真空玻璃观察窗。
youdao
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Of working cold trough: stainless steel cold trough, the double-layer vacuum glass observation window.
工作冷槽：不锈钢冷槽，双层真空玻璃观察窗。
youdao