This paper establishes an evaluation model of the customer satisfaction index for the wellhead blowout preventers of Chi......

Although Hamilton’s quaternion has been introduced successfully in estimating frequencies of two dimensional harmonics,......

One pair of near isonegic yellow/black seeded rape (Brassica napus L) were used as experimental materials to study the c......

目的探讨宁夏回族留守儿童行为问题检出率及相关因素。方法采用整群随机抽样的方法抽取永宁县6所小学和2所初中6～15岁学生共1394名......

目的探讨桂西地区壮族IgA肾病患者转化生长因子β1-509C/T基因多态性在分子遗传学中的意义。方法 PCR-RFLP法及基因直接测序法分析......

对手术治疗的113例舌癌患者进行分析，探讨其发生颈淋巴结转移的相关因素及预后。舌癌预后与颈淋巴结转移显著相关。......

本文在系统分析苏锡常地区地下水开采与地面沉降发展动态及相互关系的基础上,从"区域分解"的思想出发,将研究区按第四纪土层结构进......

介绍了利用虚拟仪器技术开发便携式现场动平衡测试系统的原理和方法,给出了动平衡虚拟仪器测量系统硬件结构和软件设计的思路,详细......