without soil or spot or stain 同义词：unspotted, unstained,
例句与用法
1.
Comparative test of performance for laundry detergents - cycle of washing unsoiled cotton control cloth procedure 衣料洗涤剂性能比较试验循环洗涤白棉对照布法
2.
Surface active agents . verification of some effects of laundering . preparation and use of unsoiled cotton control cloth 表面活性剂.洗涤漂白效果的验证.洁净控制棉布的制备加使用
3.
Surface active agents . verification of certain effects of laundering . methods of analysis and test for unsoiled cotton control cloth 表面活性剂.洗涤漂白效果的验证.洁净控制棉布的分析和试验方法
4.
Assessment of laundering effects by means of a cotton control cloth - methods of analysis and test for the unsoiled cotton control cloth 用棉制对比布评定洗涤效果.第2部分:洁净棉制对比布试验与分析方法
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