半时

The vessel's upper deck camber is to be of knuckled line, and the knuckle camber is 150mm; poop deck has parabola camber of 150mm; compass deck is to have a parabola camber of 150 (half width of 12m).

本船上甲板梁拱为折角线，折角梁拱为150mm；首、尾楼甲板为抛物线梁拱150mm；罗经甲板为抛物线梁拱150（半宽12m时）。

This paper discusses the ways in the problem of generalized characteristics in vibration to convert rigidity matrix or quality matrix into positive definite matrix when they are positive semi-definite matrix.

讨论振动中的广义特征问题的刚度矩阵或质量矩阵为半正定阵时如何使其转化为正定矩阵。

In the design of the power supply, the main circuit topology frame uses half-bridge series resonant switching and parallel load connection, in which, an IGBT is adopted as the power switches, and features high operation frequency, high output power and fast response. In addition, the IGBT in the switch mode power supply has no hard turn-on or turn –off situation in transition, thus the disturbance to the power system is avoided.

相应的激光电源采用半桥软开关技术，串联谐振并联输出，IGBT 为主控制元件，实现了高频工作、高功率多路输出，响应快速；脉冲模式工作时避免了开关管的硬开关，减小了高次谐波对电网的干扰；无需镇流电阻也可实现气体稳定放电等特性。

But the volume fraction of particles in composite fabricated by prefabricate method was finite.

但是预制件法制备的复合材料的颗粒体积分数有限，无旋涡机械搅拌法的制备温度高，故这两种方法均不适合制备体积分数高（大于 20％）、颗粒尺寸小的复合材料而利用半固态机械搅拌法，能够将颗粒尺寸为3.5μm；体积分数为40％的SiC颗粒加入到金属Al中，但是当颗粒体积分数大于30％时，机械搅拌方式不能将颗粒均匀地分散在基体金属中。

The distributary river course reservoir in the Lower Member of Minghuazhen Formation in an oilfield of Bohai Basin was modeled. The modeling units were divided using the integrated geological modeling method based on seismic, log and geological data. The sedimentary microfacies features of the modeling units were described. The geological knowledge base, including quantitative description of microfacies in every unit, probability function of facies, connection probability of sand body, was established. The geological model of reservoir was proposed on the basis of stochastic reservoir modeling by using an objectbased simulation method.

以渤海某油田新近系明化镇组下段缓坡三角洲平原亚相分流河道储层为例，利用以精细地质建模为目的的地震、测井和地质一体化综合研究方法，合理划分模拟单元并定量描述各单元内沉积微相特征；结合相概率函数和砂体连通概率等定量约束条件，建立了半定量—定量储层地质知识库，实现了等时建模、成因控制相建模、确定性条件约束随机建模三者的有效结合；采用基于目标的随机模拟方法建立了储层地质模型。

A separable functor F:〓M→〓M has more properties: information about semisimplicity, injectivity, and projectivity of objects in 〓M yields information about the corresponding properties in 〓M.

并且当F：〓M→〓M是可分函子时，如果范畴〓M中的对象具有半单性、内射性、投射性，那么在范畴〓M中的相应对象将仍然保持这些性质。

Based on the reciprocity theorem, the analytic solutions of electric field induced by time-varying magnetic field were obtained when the boundary of volume conductor is infinity, semi-infinity and prolate spheroid respectively.

根据互易定律，给出了容积导体为无限大、半无限大及边界为长球面三种情况下，时变磁场产生的感应电场空间分布的解析表达式，它是进行磁刺激理论及试验研究的基础。

The results show that, when taking into account the contributions of negative energy projector operators, the BS formalism can yield form factors which are suitable for the measured semileptonic branching ratios, and the lighter the final state pseudoscalar is the more important role the negative energy would.

结果表明：当考虑负能投影算子的贡献时，BS框架能够给出合适的形状因子及与实验值符合的半轻子衰变分支比；赝标介子越轻，负能投影算子的贡献越重要。

Nearly one in 2 births in China is delivered by Cesarean section, a quarter of which are not medically necessary, according to the World Health Organization.

世界卫生组织在最近一份调查报告中指出，中国近半产妇在生育时都选择剖腹产，而其中有1/4在医学上是不必要的。

Seed was stored in a storage temperature, the galactose content of seed decreases as the seed moisture content decrease. However, the glucose, fructose, sucrose and raffinose content of seed increase as the seed moisture content decreases, but this kind of change is not clear if seed was stored at lower temperatures ranges from 20℃ to -18℃.

然而葡萄糖、果糖、蔗糖和密三糖的结果与半乳糖的变化趋势相反，随着贮存温度的升高，四种糖的含量逐渐下降，在同一贮藏温度条件下，随含水量的降低，这四种糖的含量却逐渐升高，但在贮存温度较低时(20℃和-18℃)，这种变化趋势不明显。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐