1.活塞与连杆套配合间隙 连杆小端压入铜套后,为保证与活塞销有恰当的配合间隙,应用铰刀铰削内孔,边铰边试,当接触面不小于75%时,在活塞销外表面涂上机油,连杆平放,若活塞销
洪泽县实验小学坐落在美丽的洪泽湖畔,环境优美,文化浓郁。她始建于1960年,现有50个教学班,3200多名学生,教学质量优异,教育设施逐步实现教育现代化。学校创立了省内外闻名的
The magnetic and structural properties of 2% Ni-doped ZnO powers prepared by sol-gel method were studied. X-ray diffraction (XRD) and high resolution transmissi
好的初中学校,一定有一位好的校长。要成为名副其实的好校长,还是要从最简单的事情做起。
Fluorescence decay curves of the 3P0 and 1D2 manifolds in Pr3+ doped PbWO4 crystal were measured at room temperature and fluorescence lifetimes of both manifold
2007年江苏语文高考结束的第二天,试卷及答案就在各大报纸上刊登出来,当我看到阅读材料《麦天》中有这么一题：＂‘一路上都是鲜红的收割机,突突突,吼个不停,进了麦田,就如机船下
Polycrystalline nano-sized neodymium doped yttrium aluminum garnet (Nd∶Y3Al5O12, Nd∶YAG) powders were synthesized via a gel combustion method using nitrates a
The sintering technology of the AlN ceramics power were discussed. It is discussed that the compound sintering aids is consistent with the enhancement of the th
A novel and efficient route for preparing carbon encapsulated metal nanomaterials using staple biopolymer-starch as the carbon precursor was presented. Fe parti
The effects of rare earth elements on the yield of glutamic acid fermentation were studied by adding different content and different form of rare earth to the f