Method of a hospital medical staff and the occurrence of occupational needle protectionsurvey the situation.
防护对策方法对某医院部分医务人员针刺发生情况及职业防护情况进行问卷调查。
2
Introduced the KR2 polarization probe's structure, the principle and application in the pipeline cathodic protectionsurvey. Pointed out that polarize probe will substitute for reference electrode.
型极化探头的结构、原理和在管道阴极保护测量上的应用。指出极化探头将取代传统的参比电极。
3
In 2016, only one fourth of Chinese cities met the country's air quality standards, according to a survey of 338 cities nationwide from the Ministry of Environmental Protection.