In pure form it is acidic so it is an irritant to eyes, skin and mucous membranes.
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皮肤和粘膜
Skin and mucosa
以上为机器翻译结果，长、整句建议使用 人工翻译 。
接尘工人的皮肤针刺试验和鼻粘膜激发试验的阳性率分别达11 5 % ，4 6 %。
Meanwhile, positive rates of skin prick test and nose stimulating test in tobacco workers were 11 5% and 4 6% respectively.
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