无粉尘熟料 dust-free clinker

无尘粉笔 dust-free chalk ; dustless chalk ; free chalk

无机粉尘 Inorganic dust

无机性粉尘 inorganic dust

无尘无粉手指套 Finger Cots

液态无尘粉笔 CHALK MARKER

几乎无拼图粉尘 virtually no puzzle dust

无尘彩色粉笔 dust-free colored chalk

其他无机粉尘引起的肺尘埃沉着病 Pneumoconiosis due to other inorganic dusts

其他特指的无机粉尘引起的肺尘埃沉着病 Pneumoconiosis due to other specified inorganic dusts