It is found that partial substitution of Sr for La induces the hole carrier evidenced by positive thermoelectric power but no bulk superconductivity is observed.

通過(guò)熱電勢(shì)的測(cè)量欧美Va亚洲Va国产综合，我們發(fā)現(xiàn)在LaFeAsO中用少量的Sr部分取代La所獲得的樣品熱電勢(shì)為正值，說(shuō)明體系中被引入了空穴載流子，但是并沒(méi)有觀察到超導(dǎo)電性三级片黄色网站在线无码免费观看。

PS, NIR, UV and Raman spectra indicated that there was conjugative effect between MWNT and bromine which induced the movement of π electrons from MWNT to bromine to increase the hole carrier density.

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The utility model belongs to a massage body-building device, composed of a grip, a grip connecting piece, a tension spring, a roller connecting piece, a roller carrier and a roller, wherein, two connecting plates on the roller carrier and the roller are respectively connected and fixed by a connecting shaft, the roller whose surface is smooth is cylindrical, a connecting piece of the roller carrier is made by gripping round steel into a circular hole, and after two ends of the connecting piece of the roller carrier, which is connected with the connecting plates, are pressed into a flat shape, a drilling hole and the connecting plates are connected and fixed by the connecting shaft.

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air hole：透氣孔

177. after peak bulkhead 尾尖艙壁 | 178. air hole 透氣孔 | 179. aircraft carrier 航空母艦