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××造船厂第11車間絕緣工段,成立于1955年8月,其主要任务是將軟木板或軟木屑膠合在船艙內壁和各种管道表面,然后在軟木外面粘上一层細白布。在此过程中須使用大量依查利脫膠,其主要溶剂为尹苯,含量达33％以上,此外还有少量丙酮、乙醇等。因此,在膠合和干燥过程中,均有大量甲苯及其他毒物蒸气放散到牢气中,特别是在密閉的船艙內工作时,濃度更大。
×× Shipbuilding 11 workshop insulation section, was established in August 1955, its main task is to glue the cork board or cork chips in the cabin wall and a variety of pipe surface, and then stick to a thin layer of white cloth outside the cork. In this process must use a lot of according to Charles degumming, the main solvent Yin benzene, content of more than 33%, in addition to a small amount of acetone, ethanol and so on. Therefore, during the gluing and drying process, large amounts of toluene and other toxic vapors are released into the jets, especially when working in a closed cabin.