运用金相显微镜、描电镜和能谱仪，研究了前雾灯遮光罩表面处理后起泡的原因。
The causes of the front fog lamp shield blistering after surface treatment are studied by means of metalloscopy scanning electronic microscope and energy spectrum analysis.
在阳光下注意穿衣，太阳镜和遮光剂。
You should wear protective clothing, sunglasses, and sunscreen when in the sun.
为了减小初始中心遮光比，将次镜锥状遮光罩改进为百叶窗式结构；
In order to reduce the obscuration, conical baffle of secondary mirror is ameliorated into a shutter one.
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