Theory Study of Light Scattering Measurement Technology on Particulate Contamination under Ultraclean Environment 超净介质中颗粒状杂质的光散射测试技术的理论研究
and the ultraclean area up to 400 sqm., with the highest cleanliness of Grade 10. 超净面积达到400平方米,最高洁净度达10级。
testing equipment including C-V tester, infrared thickness tester, spreading resistance tester and fourpoint tester;and the ultraclean area up to 400 sqm. 测试设备有C-V测试仪、红外测厚仪、扩展电阻测试仪、四探针测试仪等;
“Children raised in an ultraclean environment,” he added, “are not being exposed to organisms that help them develop appropriate immune regulatory circuits. “在过于清洁的环境中成长的儿童,”他补充说, “没有被生物体所感染,而这些生物体却能帮助他们健全一个适当的免疫调节回路。”