某信用证上规定以下条款：
Applicant: Nissho Iwai Corporation No. 4-5 Akaasaka 2-Chome Mi-Natou Tokyo, Japan Bneficiary: China National Mine Import and Export Corp. Beijing, P. R. China Preadvice: Bank of China, Beijing Branch Full sets of clean on board marine bill of lading made out to order of shipper and blank endorsed and marked freight prepaid and notify applicant.

综采支架至少每10米安装一组自动、手动两用喷雾，每组不少于1个喷嘴，实现移架自动喷雾和机组割煤时打开其下风侧3－8组喷雾拦截粉尘。（）