The city was entombed in volcanic lava.城市被火山熔岩掩埋。Neither of them had any idea how long the body had been entombed.他们俩谁也不知道这具尸体被埋葬多久了。It became entombed in the permafrost, where it remained until recently freed.它被掩埋在永久冻土层...
测定硫胺素最灵敏和准确的方法之一是硫色素(脱氢硫胺素)法.One of the most sensitive and accurate methods for determining thiamine is the thiochrom procedure.结论高海拔地区学生可从日常膳食中获取足量的硫胺素与核黄素.Conclusions College students can get adequate thiamine and ribo...