查询词典 proper vector

In this technique, a suitable block of background in the current image is firstly determined as the reference block, then the most similar background in the next image is searched to gain motion vector when a proper range around the reference block in the next image is taken to compare with the reference block.

本文在背景消除的技术上，主要运用区块比对的方式，首先在前一张图像中找一块合适背景当样板，然后在下一张图像中於样板位置四周取适当的范围搜寻与样板最相似的背景来取得位移向量。

To solve the problem encountered in finding a proper rotation matrix and translation vector, approximate and precise solutions are provided successively. The approximate one has the advantage of utilizing existing solution, with limited range of weight to choose from. The precise one has no limit to weight, and can also prevent the problem of obtaining a mirror matrix of the correct one. Besides, it permits the'hat'to be amplified to fit the size of'head'.

其中近似解可以直接套用现成的公式计算，但是权重的选择余地不大，而精确解则无此限制，而且从理论上解决了不同权重下求解旋转矩阵和平移向量时，可能出现错误的旋转矩阵的问题，并允许在配准时对"帽"进行缩放以适应"头"和"帽"的大小不匹配的问题。

The Ids RNA or siRNA obtained by said invention is mixed with hepatitis B virus expression vector in proper proportion, and injected into the mouse body by vane caudalis hydraulic pressure method, and its result shows that the non-homologous sequence IdsRNA and siRNA basically do not inhibit the replication of hepatitis B virus in mouse body, and these RNA molecules are mixed with hepatitis B virus gene.

将本发明得到的ldsRNA或siRNA以适当的比例与乙型肝炎病毒表达载体混合，并用尾静脉液压法注射到小鼠体内。结果显示非同源性序列ldsRNA和siRNA基本不抑制乙型肝炎病毒在小鼠体内的复制，而与乙肝病毒基因同源性的ldsRNA和siRNA可以有效抑制乙型肝炎病毒在小鼠体内的感染复制，抑制率高达90％以上。

Using series of vector magnetograms and proper motions, we have analyzed a delta spot in NOAA 9077. This delta spot formed and disintegrated in a very special way. Its current helicity evolution has a close relationship to the magnetic configuration. We find the conclusion, for the first time, that the sign reversal of the helicity can lead to the disintegration of the compact delta structure.

为了解NOAA 9077在7月14日的三维磁场位形，我们使用无力场局部外推程序模拟它的耀斑后环，探讨了理论与实际观测的差异和可能的原因；利用源表面方法，使用MDI高精度磁场数据进行全球势场外推，探讨2000年7月14日大耀斑事件的外部触发机制。

The flux hysteresis controller was ignored in the constant torque region and an improved method was proposed to make the estimation of torque easier.The proper stator voltage space vector was selected based on the output of the torque hysteresis controller and the sector which the current rotor flux locates in.

摘 要：针对无刷直流电机直接转矩控制中磁链观测困难、控制复杂等问题，提出了一种应用于无刷直流电机二二导通方式下的新型直接转矩控制方法：在电机基频以下调速时，略去了常规的磁链观测控制环节，改进了转矩计算方法，通过转矩滞环控制选择所施加的空间电压矢量。

A new brushless DC motor DTC scheme was studied to solve those problems associated with direct torque controlof brushless DC motor,such as difficulty to control flux and complexity to estimate torque.The flux hysteresis controller was ignored in the constant torque region and an improved method was proposed to make the estimation of torque easier.The proper stator voltage space vector was selected based on the output of the torque hysteresis controller and the sector which the current rotor flux locates in.

摘 要：针对无刷直流电机直接转矩控制中磁链观测困难、控制复杂等问题，提出了一种应用于无刷直流电机二二导通方式下的新型直接转矩控制方法：在电机基频以下调速时，略去了常规的磁链观测控制环节，改进了转矩计算方法，通过转矩滞环控制选择所施加的空间电压矢量。

Transferred the NP-1 gene into C. ellipsoidea by electroporation with high efficiency expression vector pBinUΩNP1. PCR, Southern blot and Northern dot blot analysis of the G418resistant alga strains indicated the stable integration and correct transcription of NP-1 in C. ellipsoidea genome. In vitro antagonistic assays showed the proper expression of defense gene in C. ellipsoidea. Transgenic C. ellipsoidea is antagonistic to gram negative bacteria—Bacillus subtonic, gram positive bacteria—Escherichiacoli and fungi—Fusarium oxysporum to some extent.

以椭圆小球藻完整细胞为受体，采用电激转化法将连接在高效表达载体pBinUΩNP1上的兔防御素NP-1基因导入小球藻，通过PCR、Southern杂交、Northern点杂交对转基因小球藻进行了分子检测，同时通过体外离体抑菌实验检测了兔防御素NP-1基因表达产物的活性，结果表明NP-1基因已稳定整合到小球藻基因组中，并进行了正确转录和表达。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。