本文设计出了一个调节分辨率极高的螺旋调节变阻器。
A spiral rheostat which is very high in resolution capacity is designed.
两地区幽门螺旋杆菌抗体阳性率有明显差异。
Two area Helicobacter pylori immune body masculine gender rate has the obvious difference.
两地区幽门螺旋杆菌抗体阳性率有明显差异。
Two area Helicobacter pylori immune body masculine gender rate has the obvious difference.
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