150Nd(gamma, gamma')mass regionNuclear resonance fluorescence experiments have been performed on the nuclei 142,146,148,150Nd, which are located in the mass region of a nuclear shape transition from a spherical ( 142Nd) to a well-deformed shape ( 150Nd). Bremsstrahlung of 4.1 MeV endpoint ...
对于多项式P(x)=anxn+an-1xn-1+-+a1x+a0.分别韶算法和直接求和的方法求P(x0)时.可做乘法的次数分别为( ) A.m.nB.n.n(n+1)2C.n.nD.2n+1.n
(2011•西城区一模)某次测试成绩满分为150分.设n名学生的得分分别为a1.a2.-.an.bk为n名学生中得分至少为k分的人数.记M为n名学生的平均成绩.则( )A.M=b1+b2+-+b150nB.M=b1+b2+-+b150150C.M>b1+b2+-+b150nD.M>b1+b2+-+b150150
某次测试成绩满分为150分,设n名学生的得分分别为a1,a2,⋯,an(ai∈N+,1⩽i⩽n),bk(1⩽k⩽150)为n名学生中得分至少为k分的人数.记M为n名学生的平均成绩.则( ). A. M=b1+b2+⋯+b150n B. M=b1+b2+⋯+b150150 C. M>b1+b2+⋯+b150n D. M...
An electronic device coupling apparatus is used to couple two electronic devices through a hinge. A first electronic device (221) is disposed within the main housing of a radiotelephone (101). The second electronic device (301) is disposed within a movable element (103) of the radiotelephone ...
摘要: 全面修订的《室外排水设计标准》(GB 50014-2021)已经发布实施,主编单位和主要起草人员经常收到许多设计人员的疑问,为将本次全面修订的主要关键问题向广大设计人员做些解释,主编单位就《室外排水设计标准》的10个关键点进行了深入的解析,为排水工作者理解标准条文提供参考. 查看全部>>关键词:...
Deformation mechanismEvolution of microstructureIncreasing testing temperature significantly decreases the tensile and fatigue strengths of the as-cast Mg-3.73Nd-0.56Zr alloy. The stress amplitude of the as-cast alloy tested at 150 掳C remains basically unchanged until fatigue failure. The deformation ...
We develop a compact high-frequency actively Q-switched Nd:YVO4/YVO4 Raman laser at 1525nm. The mode size stability and the mode overlapping are numerically analyzed to craft the resonator. Experimental results reveal that the compact cavity and the cavity dumping effect lead to the considerable ...
The analysis, which led to a satisfactory description of excitation energy patterns, quadrupole moments, and decay properties of the states (even when important M1 components were present in the transitions), is extended to the available data on g factors, in 144-150Nd. Their values are ...
摘要: 本文主要针对糖化麦汁过滤洗糟过程的洗糟水硬度高,pH值高,洗糟过程多酚浸出量高的情况,根据多酚在不同pH条件下溶解性不同的特性,适当降低糖化过程的pH值,实施在线洗糟水调酸工艺,以控制麦汁制备过程麦芽多酚的浸出,实现麦汁和成品酒多酚含量的降低,改善啤酒口感,提升啤酒胶体稳定性.关键词:...