查询词典 Z-twist

Eclipsing Z-scan and reflection Z-scan,and analyses the characters and applications of these techniques.

分析了各种Z scan技术的特点及应用。综述了Z扫描理论与技术的发展。

The term z-map might be a little misleading to those who are not familiar to working in 3D space. In high school geometry class the concept of two-dimensional space: the x-axis represents horizontal space and the y-axis represents vertical space. Whenever you work in packages such as Painter, Photoshop, Commotion, Combustion or After Effects you are working solely in 2-dimensional space. When you work in 3D you have, in addition to the x- and y-axes, a z-axis, representing depth.

z-map这个称呼或许对那些不从事三维空间工作的人来说有一点误导的嫌疑，在高校的几何课里面，关于二维空间的概念，X轴代表着横向空间，而Y轴代表着纵向空间，无论何时你使用例如Painter， Photoshop， Commotion， Combustion 或After Effects这样的软件，你正工作在一个二维的空间，但是在三维空间工作时，除了X轴和Y周，你还要加上Z轴，它代表了深度的概念。

Plant volatiles as allyl isothiocyanate , Z-3-hexen-1-ol , and Z-3-hexenyl acetate can attract DBM effectively and they have enhanced effect on captures of sex lure.

同时研究了植物挥发物异硫氰酸丙烯酯、青叶醇（Z-3-hexen-1-ol）、乙酸顺-3-己烯酯（Z-3-hexenyl acetate）对小菜蛾的诱捕作用及对性信息素诱捕作用的影响。

Our company specializes in the creation of the valve handwheel, handle, bevel gear, worm gear boxes, valve stem, nuts and various valve accessories enterprise can also be in accordance with customer requirements, order a variety of different specifications of hexagonal, square heart, round hole Size of hand wheel of the Company since its inception has been committed to product innovation, and constantly develop new products, our customer-centered and quality as its core business philosophy, in order for the company's products to better serve the society serve the public, the company's strict production management system, continuous introduction of new technologies, new materials, new techniques, and is equipped with a set of complete machining equipment and sophisticated testing equipment to create the link axis hand wheel, hand wheel Fang, keyway hand round, hexagonal hand wheel, lever ball valve, butterfly valve handle, valve bevel gear, worm gear box, is the Quartet SL101-F type, cone Quartet SL101-Z type, is the Quartet SL104-F type, flower type is SL105 Quartet , cone Quartet SL-104-Z-type, hexagonal SL104-L-type, hexagonal SL101-L type, round type keyway SL101, SL104 keyway circular type, is the six-party type SL102, SL101-J-type keyway, keyway SL102-J-type , SL103-J-type keyway, keyway SB101-J-type, the second generation of new hand wheel, BA series bevel gear, WQDX3, QDX3, QDS3-S, QDX3-G, XQDX3, QDX3-CF, FQDX3, SQDX3 part series back to transformation of the valve device manually, QDX3-C, QDX3-D series valve electric part of the transition back to devices, valve cover series, bearing gland series, the electric-type bearing cap, with a round open cap, sealing the Block series, hand - hard hat round shields hexagonal locking nut series of the Company follow the "survive on quality, reputation and development" business philosophy and the integrity, service, communicate, progress, development.

本公司自创建以来，就一直致力于产品的技术创新，不断开发新产品，秉承以客户为中心，以质量为核心的经营理念，为使公司的产品能更好的服务于社会、服务于大众，公司实行严格的生产管理制度，不断采用新技术，新材料，新工艺，并配有一整套完善的机械加工设备和检测设备制造出精良的连轴手轮，方心手轮，键槽手轮，六角手轮，球阀手柄，蝶阀手柄，阀门伞齿轮，蜗轮箱，正四方SL101-F型，锥四方SL101-Z型，正四方SL104-F型，正四方SL105花型，锥四方SL-104-Z型，六角SL104-L型，六角SL101-L型，圆型键槽SL101型，圆型键槽SL104型，正六方SL102型，键槽SL101-J型，键槽SL102-J型，键槽SL103-J型，键槽SB101-J型，第二代新型手轮，BA系列伞齿轮，WQDX3，QDX3，QDS3-S，QDX3-G，XQDX3，QDX3-CF ，FQDX3，SQDX3系列部份回转型阀门手动装置，QDX3-C，QDX3-D系列部份回转型阀门电动装置，阀瓣盖系列，轴承压盖系列，电动型轴承压盖，圆开帽，上密封座系列，手轮护罩拼帽系列六角锁紧螺母系列本公司遵循&以质量求生存，以信誉求发展&的经营理念和诚信，服务，交流，进步，开拓。

Only with such characteristics, the movement equations can be expressed as matrices, and the idea of transforming the movement equations to the simplest form through a nonlinear transformation can be realized;(2) The form of Zi =Yi + YTH2i Y + Y7H3i Y(2)+ Y(2)T H4i Y(2)+ YTH5i Y(3) is adhibited in the nonlinear transformation, so that the multivalued problem caused by the nonlinear transformation is avoided, and the higher order transformation can be taken next;(3) The fourth order nonlinear transformation matrices H21,H31,H41 and H51 are derived, by which the original movement equations of electric power system is transformed to Jodan form in Z space;(4) By use of the fourth order nonlinear transformation, the approximate expression of the stability boundary is obtained, in Z space it is Z1= 0,in Y space it is Y1 + YTH21 Y + YTH31 Y(2)-i- Y(2) TH41 Y(2)+YTH51 Y(3)= 0;(5) The criterion used in this paper to judge whether the system critical unstable is simple and quick;(6) The method used in this paper is a direct method, and no need to construct an energy function.

正是由 于电力系统的运动方程具有这样的特性，才能写成矩阵的形式，通过非线性变换将电力系统的运动方程变换为最简单的线性形式的思想才能得以实现；（2）将通常运用于电力系统暂态稳定性分析的Normal Form变换的形式由 Yi＝ Zi＋ ZTh2riZ变形为 Zi＝ Yi＋YTH2iY＋YTH3iY（2）＋Y（2）TH4iY（2）＋YTH5iY（3），从而使得在对持续故障轨线实施同样的非线性变换以确定临界切除时间时，避免了非线性变换带来的多值性的问题，而只有在没有多值性问题的困扰下，才能采用较高阶的变换：（3）推导出了将原始电力系统系统的运动方程变换到Z空间的约当形式的非线性变换矩阵H21、H31、H41、HS1：（4）在运用四阶了「线性变换的情况下，给出了受扰动后系统的稳定边界的近似的解析表达，在Z空间为Z1=0，在y空间为： Y1+YTH21Y+YTH31Y(2)+Y(2)TH41Y(2)+YTH51Y(3)=0 （5）确定临界失稳的判据简单、快捷：对于一个复杂的电力系统，其稳定边界是相当复杂的一个高维曲面，即便是已知系统稳定边界的解析表达，要求出系统持续故障轨线何时与这一高维曲面相交，在数学上几乎是不可能实现的。

Kobayashi had analyzed the relationship between genetype and BMD of 238 post-menopause healthy femmes at Nagano county in Japan,and pointed out:the abdominal vertebra the Z integral of BMD has correlation with PvuⅡsite,the corresponding BMD\' s sequence of each genetype is: PP＜Pp＜pp,the Z integral of PP genetype in abdominal vertebra BMD is the lowest,but the corresponding BMD\' s sequence of Xbal polymorphic site genetype is XX＞Xx＞xx,without statistical significance.

Kobayashi等分析日本Nagano县238名绝经后健康妇女基因型与BMD的关系发现：腰椎BMD的Z积分与PvuⅡ位点相关，各基因型对应的BMD高低顺序为PP＜Pp＜pp，PP基因型腰椎BMD的Z积分最低，而XbaⅠ多态位点基因型对应的BMD高低顺序为XX＞Xx＞xx，但无统计学意义。

This text design one available in grindings the cylinder spiral slot the Z direction advance to the organization has carried on detailed mechanical design and transmission system design to the organization to Z advance.

本文设计了一台可用于磨削圆柱体螺旋槽面的数控机床的 Z 向进给机构，对 Z 向进给机构进行了详尽的机械设计、传动系统设计。

The second part of the paper introduces the Z curve methodology which is the basic tool in analyzing prokaryotic genomes and gives a brief introduction to the application of Z curve method in various areas such as gene finding in prokaryotic genomes, isochore structure in eukaryotic genomes and identification of replication origins in the genome of archaeon and bacteria.

论文的第二部分介绍了DNA序列的Z曲线方法，这是我们分析原核生物基因组的主要工具，同时简单介绍了Z曲线方法在基因识别，基因组的isochore结构以及在细菌和古细菌复制起始位点识别等领域的应用。

In the second part, we make the study of the application of Z-transformation when we solve linear difference equation bearing constant coefficient and transmission function in pulsing system.

第2部分：&Z变换的应用&，主要通过上1章研究的Z－变换的逆变换和10个性质定理，研究了Z－变换在求解具有常系数的线性差分方程和脉冲系统的传递函数方面的应用。

We defined a mixing scanned plane according to objective reality of Guilin , graded the intensity of Radar echo , statistics by meads of optimization method,the coefficient of A and b of Z～I relation were obtained.

根据桂林的实际定义混合扫描面，采用降水回波强度分级，用最优化方法统计Z～I关系中的A、b系数，定量测量降水能力得到了明显的提高，比用天气系统分类确立的Z～I关系准确率提高了20%，比直接应用美国提供的Z～I关系准确率提高近40%。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。