随着感光等技术的不断发展,全暗室、半暗室作业人员不断的增加。人们还发现患骨软化症的人也随之增加,特别是哺乳妇女往往还可引起婴儿罹患佝偻病。其原因是与血清中VD含量降低有关。有人对每天在暗室作业八小时,在半暗室作业四小时及非暗室作业人员,分成三组进行血清VD测定,发现随暗室作业的光度减少及所处的时间增加,血 With the continuous development of technology such as light-sensitive, all-darkroom, semi-darkroom operations staff continue to increase. People also found that people with osteomalacia also increased, especially breastfeeding women can often cause infants rickets. The reason is related to the decrease of serum VD. Some people work every day in the darkroom for eight hours, four hours in the darkroom operation and non-darkroom workers, divided into three groups for serum VD determination and found that with darkroom operation to reduce the luminosity and the time they are in, blood