大量碳氢化合物如苯并芘也是诱变剂.A large number of hydrocarbons such as benzopyrene are also mutagenic.建立了粮食中苯并芘残留的高效液相色谱测定法.This thesis developed a HPLC method for determination of benzo a pyrene in grain.建立了肉类食品中苯并芘残留的高效液相色谱测定法.This t...
Not far away were other geothermal wellheads, their natural pressurized steam deflected into huge insulated pipes.不远处是另几口地热井, 它们的天然加压蒸汽输进了巨大的绝热管道.All experimental investigations about the geothermal conditions are based ...
刀头的刀柄和刀头分开使用铜焊焊接, 容易更换刀头.Blades and segments are welded by braze, which facilitate change of segment.自动垂直功能,可以确保刀头回到与工件完全垂直的位置去切割.Automatic resquaring feature insures nozzle is perpendicularly to the part being cut.请将刀头逆...
哈代由于对生活持过度悲观的态度而常常受到批评。Hardy has often been criticised for an excessively pessimistic view of life.对历史抱极其悲观的观点an apocalyptic view of history悲观的人会说根本不可能取得成功。Cynics will say that there is not the slightest chance of succes...