The reason for the differences in the spectral purity with regard to longitudinal mode content of the lasers is still not clear . 关于这种激光器中，造成纵模成分的纯度有差别的原因，现在仍不清楚。
Stable synthesis of potassium ferrate with high purity 高纯度高铁酸钾的稳定合成
Test method for purity of hydrocarbons from freezing points 冰点烃纯度的测试方法
New techniques of refining high purity methyl acetate 高纯度醋酸甲酯精制新工艺
Chemical analysis methods on the purity of cyanuric acid 三聚氰酸纯度化学分析方法
Yancheng ruibiao pharmaceuticals and chemicals factory 高纯度二苯甲酮产品生产厂家
General rule for test methods of highly purified reagents 高纯度试剂试验方法的总则
Test method for freezing points of high - purity hydrocarbons 高纯度烃的冰点测试方法
Test method for purity of trichlorotrifluoroethane 三氯硝基甲烷纯度测试方法
For a pure and stable liquid to produce high pressure 四处寻找纯度高且稳定性好的液体
