查询词典 projective pencil of lines

Four stable maize DNA introgression lines and 4 stable barnyard grass DNA introgression lines were constructed and then investigated.

通过花粉管通道法将稗草总体DNA和玉米总体DNA导入水稻受体R122中，获得的D1代变异频率分别高达1.487%和3.81%。

We strongly believe that our role in your business is to provide a reliable support network behind the lines, because you battle on the front lines for success.

我们坚信，我们的角色在你的业务是提供一个可靠的支持网络背后的线路，因为你在战场上的前线，为取得成功。

In the traditional leather line, sewing thread, canvas every industry application, but also in the nets with lines, cable lines, advertising light box cloth, sunshade RainXhigh-grade cloth, geotextile materials and canoe, military industry and other industries has been the promotion of .

在传统的皮革线、缝纫线、逢帆布行业不断得到应用，又在渔网用线、电缆用线、灯箱广告布、高档遮阳雨蘕布、土工材料及皮划艇、军事工业等行业得到了推广。

We looked at how to break up a text buffer into lines and segments for purposes such as syntax highlighting and line folding, and examined the distinction between logical and visible lines.

我们研究了如何把一个文本缓冲器拆分成目标行或数据段（例如语法高亮、可折叠行），以及检验逻辑行与可视行的区别。

It is shown that in Jameson's algorithm is not an orthogonal stream-lines coordinate system, but a local stream-lines coordinate system instead. Nevetheless, because of the finite-difference discretization in Jameson's scheme is not carried out along the direction of s and n, but along the Cartesian coordinates, the analysis on all terms of the full potential equation in Cartesian coordinates reveals that his scheme does take a back-ward difference along the streamwise exactly at all points in the supersonic flow region.

表明其所采用的坐标系不是真正的正交流线坐标系，而是局部流线坐标系；同时由于Jameson方法并不对s，n进行差分离散，而是在原笛卡尔坐标系下作差分离散，对笛卡尔坐标系下的全位势方程中的各项的分析表明，Jameson方法恰好能做到在超音速点沿真正的流线方向作后差分。

Some research was explored in the application of cell lines and laid foundation of using cell lines to study theory and experiment.

在细胞系应用方面做了一些探索，为进一步利用细胞系进行基础理论和实验研究奠定了基础。

Whereas parallel projections are used to project points onto the image plane along parallel lines, the perspective projection projects points onto the image plane along lines that emanate from a single point, called the center of projection.

与平行投影沿着平行线将物体投影到图像平面上不同，透视投影按照从投影中心这一点发出的直线将物体投影到图像平面。

Of course, you can buy Centrex lines and attach your own PBX or key system to those Centrex lines.

当然，您可以购买Centrex 链路并将自己的PBX 或按键系统接入那些Centrex 链路。

In some cities the price of Centrex lines is lower than "normal" PBX lines.

在某些城市，Centrex 链路的价格较之"常规的"PBX 链路要低一些。

Further more, transmission systems with branches of uniform and nonuniform transmission lines can be studied with this method conveniently. Two approaches for solving the ABCD matrices of nonuniform lines are given, one is the method of equivalent cascaded network chain, another is the one-step method.

波形张驰迭代法最近几年才被用来分析多导体传输线的时域响应，在第五章作者用此方法首次分析了具有频变参数的传输线，并将波形的概念进一步推广，给出了用波形张驰迭代技术求解非均匀传输线ABCD矩阵的方法。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。