你右眼100度近视50度散光,左眼150度近视(远视) You have myopia (hyperopia, astigmatism). The power of your right eye is minus one diopter and two quarters cylinder, and the left eye is minus (plus) one point fifty diopter. 18.请您注视我的鼻子。我帮您...
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To control the spread of highly contagious viruses such as SARS-CoV-2, effective test-trace-isolate strategies require population-wide, systematic testing. Currently, RT-qPCR on extracted RNA is the only broadly accepted test for SARS-CoV-2 diagnostics, which bears the risk of supply chain ...
A hydrocarbon oligomer and a process for its production is disclosed that is useful as a pour point depressant and as a combination pour point depressant and viscosity index improver for mineral oil or synthetic oil. The oligomer is also... AS Chu,A Jackson,MM Wu - US 被引量: 27发表: ...