Objective To establish a new inhibition kinetic spectrophotometric method for the determination of trace ascorbic acid.
目的建立测定抗坏血酸的阻抑动力学光度分析的新方法。

If the data flow moves negatively, the way to trace inspection of nuclear material accounting quality will be constituted.
若反向流动，则成为追朔核查核材料衡算质量的途径。

The Method of Flowing Injection of Atoms to Absorb Spectrum to Determine the Trace Selenium in the Rich Selenium Vegetables
流动注射原子吸收光谱法测定富硒蔬菜中微量硒

The moulding characteristics of plastic watertap were analyzed, and core pulling in circular arc trace was applied to the tap.
分析塑料水龙头的成型特点，采用了圆弧抽芯。

In July the American Academy of Pediatrics and the US Public Health Service urged vaccine makers to remove the trace of mercury preservative added to many vaccines to kill bacteria.
7月，美国儿科科学院和美国公共卫生署要求疫苗生产商取消加进很多疫苗中以杀死细菌的水银防腐剂的含量。