Patients may report flashes of light, floaters, a curtain or shadow moving over the field of vision, and peripheral or central visual loss.
患者可能会看到闪光，漂浮物，帷幕或阴影遮挡住了视野，以及周边或中心视力丧失。
2
This paper uses oxidation reduction potential method to determine oil enrichment area and performs a pilot test in Yushulin Oil Field in the peripheral part of Daqing.
应用氧化还原电位法测定含油富集区，在大庆外围榆树林油田进行了试验研究。
3
After it first breaks out over the Southeast Asia in the Asian summer monsoon system, summer monsoon over the Southeast Asia affects the peripheral area with varied wind field and convection field.