查询词典 threshold frequency

Coordinate sequence method is made up of the instruct information of polygon boundary x, y coordinate. It is the easiest polygon vector encoding method. The file structure of this method is easy, but because of the polygon boundary has stored two times, it will produce data redundancy, moreover, short of neighbor threshold information; Tree index encoding method make all the boundary points digitizing, store the coordinate sequence, connect the point index to boundary line, and then connect the line index to other polygons, so as to the tree index structure has came into being. It eliminates neighbor polygons boundary data redundancy problems; Topology structure encoding method is a method which by setting up a complete topology relationship structure, resolve the neighbor threshold and island information process problem. However, it makes arithmetic more complicated and makes database bigger.

坐标序列法是由多边形边界的x，y坐标对集合及说明信息组成，是最简单的一种多边形矢量编码法，文件结构简单，但多边形边界被存储两次产生数据冗余，而且缺少邻域信息；树状索引编码法是将所有边界点进行数字化，顺序存储坐标对，由点索引与边界线号相联系，以线索引与各多边形相联系，形成树状索引结构，消除了相邻多边形边界数据冗余问题；拓扑结构编码法是通过建立一个完整的拓扑关系结构，彻底解决邻域和岛状信息处理问题的方法，但增加了算法的复杂性和数据库的大小。

Test results showed that surface impurity was cleaned out and it was found that the zero probability damage-threshold increased 24% and 50% probability damage-threshold increased 19%.

结果发现，石英基片在经过紫外脉冲激光预处理后表面杂质得到有效清除并暴露了低阈值缺陷，处理后的石英基片零几率损伤阈值平均提高24%左右，50%损伤阈值提高约19%。

The accoustic emission induced by multi-pulse laser thermal shock was acquisited and used to determine the damage fatigue threshold and fatigue threshold.

根据声发射信号确定了不同载荷作用下的激光热疲劳损伤阈值和热疲劳寿命；用超声的方法确定了PMMC的激光热-力疲劳损伤参数。

During the updating and mining of TCIS-Tree several optimal strategies, such as data filtering, heuristically and dynamically adjusting the pruning threshold and mining threshold, and so on, have been explored to make our method efficient.

在TCIS-Tree的更新和挖掘过程中，采用数据过滤、启发式动态调整剪枝阈值、挖掘阈值等若干优化措施，有效地提高算法的时空效率。

Two new data structures TOPSIS-Tree and RELIS are devised to maintain potential significant itemsets and mined results, respectively. Moreover, three optimal strategies are exploited to reduce time and space consumption of the algorithms:(1) pruning impotent nodes in the newest basic window whenever a sliding window updates,(2) promoting support threshold during mining process dynamically, and (3) adjusting pruning threshold adaptively and heuristically.

设计概要结构TOPSIS-Tree和RELIS分别存储和记录流数据的摘要信息和当前滑动窗口的挖掘结果，并设计了三种优化策略用以提高算法的时空效率：(1)滑动窗口更新时剪枝最新基本窗口的无功节点；(2)挖掘过程中动态提升支持度阈值；(3)启发式自适应调整剪枝阈值。

We indicated from our test that the treatment concentration of 50 mg· L- 1 and exporsure time with 4h by the herbicide were believed to be the threshold concentration and threshold time for causing abnormal cell mitosis in Secale cereale and Hordeum vulgar, respectively.

人们对它的作用机理和作用部位[2]、它在土壤中吸收和降解[4]以及草甘磷对土壤微生物群落的影响作过一定的研究[5]，并已开始抗草甘磷转基

Chose 30 health adults and 40 patients of chronic alcoholism of daily tippled alcohol more than 250mL and have five more years of tippling history, tested the thermal sensation threshold and vibration threshold of left hypothenar, left index finger, left instep and left first toe, and also tested the sense and motion conduction velocity of left nervus tibialis, median nerve and nervus ulnaris.

选择20例由腰椎间盘突出所致坐骨神经痛发作的患者，分别测定患者左右两侧小腿外侧和足背外缘的皮肤的温度觉和外踝的振动觉，并同时测定患侧的胫神经感觉传导速度和H反射。

Provided is a threshold determining device (10) for determining a threshold, at which the ratio for the coincidence/incoincidence of each data to become less than a required value becomes a required assurance value or more.

提供了一种用于确定阈值的阈值确定设备，在该阈值，小于要求值的每个数据的假匹配率是要求的保证值或者更大。

It is shown that the reaction U+CO→CUO with a long-lived intermediate complex has no threshold energy, which agrees with the potenlial surface. When the collision energy is greater than 418.4 kJ/mol, the intercharge reaction increases, until the CUO molecule will decompose into U, C, O completely, and these reactions have threshold energy.

结果表明：在碰撞能低(15kJ/mol)时可以生成长寿命络合物CUO(X^3A)，并且该络合反应是无阈能反应；碰撞能大于418.4kJ/mol后，先后出现置换产物UO和UC；随着碰撞能进一步增大，CUO分子将被完全碰散成U，C和O原子，而且反应U+CO(0， 0)→UO+C，U+CO(0， 0)→UC+O和U+CO(0， 0)→U+O+C是有阈能反应。

The initial threshold could be chosen by using Otsu algorithm, and in the iteration process, an optimal threshold was determined by maximizing the MI between the original image and the segmented image.The effectiveness of the proposed approach was evaluated by applying it to the microphotographic.

首先利用Otsu算法确定全局阈值作为初值，以互信息量为目标函数，在小范围内计算分割图像与原图像的互信息量，互信息量达到最大时的阈值即为最优值，这是将图像配准方法用于分割的一种创新性尝试。

They have quite a lot of work to do.

他们有许多工作要做。

Let us give you a more elaborate example of this process.

让我们给你这个过程的更多的详细例子。