查询词典 focal length

It has many functions such as conputerized control,frequency conversion speed regulation,fixed-length setting(Fixed-length is divided into servo and stepping two type.The speed is little slower during stepping fixed-length.It can cut paper to maximum 350 gramme of thickness),automatic count,voice-light alarm,electrice eye tracking automatic deviation-correcting etc..

具有电脑控制、变频调速、定长设置（定长分伺服与步进两种，步进定长是速度会慢一点，切纸时最厚只能切到350g）、自动记数、声光报警、电脑跟踪、自动纠偏等功能。

The influencing factors of femoral necrosis included the degree of healing activity, the dosage summation of corticosteroids, and length of ictus therapy. The influencing factors of bone density included age, dosage summation, and length of ictus therapy. The influencing factors of the bone fabric and flexibility included the use and length of ictus therapy. Statistics showed that serum IgG was not related with avascular necrosis of femoral head and osteoporosis.

股骨头缺血性坏死的影响因素有后期活动量、糖皮质激素总量和糖皮质激素冲击疗法的持续天数；骨密度的影响因素有年龄、冲击疗法和糖皮质激素总量；骨结构和骨弹性的影响因素有冲击疗法、冲击疗法持续的天数；血清抗体IgG与患者康复期股骨头缺血性坏死、骨质疏松在统计学上无联系。

If pulley keyway length is less than this length, rework long key by removing one-half of excess length between pulley and end of key to maintain balance.

如果皮带轮的键槽长度小于该长度，则单端去掉皮带轮和键端之间的多余长度，以此保持平衡。

Namely, the first, the beginning, end and length of growing season of every type of vegetation is estimated with threshold method and moving average method, and the beginning end and length of growing season of vegetation from 1982 to 1999 is fitted linearly, finally, linear trend of the beginning end and length of growing season of vegetation is analyzed. The second, phenological phase in different years and zones is estimated based on greatest changes of slope method and EOF analysis method, and the result monitored by the two methods is compared, as a result, trend of growing season change from 1982 to 1999 in different latitude zones is better acquired. The third, phenological phase of vegetation in different spatial location from 1982 to 1999 is fitted based on curve. Then, spatial difference rules of growing season of every year and average of multi-year is discussed in article. In the end, lag correlation and linear regress are used to study relation between phenological phase of different types of vegetation, different latitude zones, different spatial places and climate changes.

利用阈值法和滑动平均法逐年估测了每种植被类型的生长季的开始、结束日期及长度；对18年中植被生长季的开始、结束时间和长度进行一次线性拟合，分析了植被生长季的开始、结束日期和长度的线性变化趋势；基于最大变化斜率法和EOF分析法估计了不同年份、不同区域内植被生长季的开始、结束时间及其长度，并对这两种方法的监测结果作了比较，从而得到了较好的不同纬度区域1982～1999年植被生长季的变化趋势；基于曲线拟合了1982～1999年的不同空间位置的植被物候期，然后讨论了每年和多年平均的植被生长季的空间分异规律；最后利用时滞相关分析和线性回归研究了不同类型植被的物候期与气候变化的相互关系，不同纬度带的植被物候期与气候变化的相互关系，植被物候期与气候变化空间相互关系。

So the main study contents of this thesis are as follows: the load distribution pattern along the length beam and the cross beam in the place of node、 the appropriate matching rigidity of the length and cross beams in the action of same anchorage force and the affection pattern discuss on sloping surfaces dip angle、 beam rigidity 、 anchor-rope angle as well as the position of load which affect the load distribution ratio on length and cross beams. In the end it brings forward lattice beam internal force calculated method on the basis of double parameter groundsill model.

鉴于此，本文主要的研究内容是格构梁节点处荷载沿纵横梁的分配规律、同一锚固力作用下纵横梁合理的匹配刚度以及对格构梁纵横梁荷载分配比值可能存在影响的坡面倾角、梁刚度、锚索夹角、加载位置等因素的影响规律探讨，最后提出基于双参数地基模型的格构梁内力计算方法。

While leafstalk length and node length were two important constituent characters of fruit length.

而叶柄长、节间长为果长的重要构成性状。

Firstly, the connection matrices are strongly connected Boolean matrix, it is shown that the maximum length of limit cycles for FBAM is the period index of the product of the connection matrices. Thus, the maximum limit cycle is reachable. Secondly, two strongly connected components are connected by walks, it is proved that the maximum length of limit cycles for FBAM is the max. of the period index of the two strongly connected components if they are prime, otherwise, it is the least common multiple of the two period index. Finally, n strongly connected component are connected in succession, the method for computing the maximum length is described. By different patterns are presented to the networks, diminishing the number of the strongly connected components until only two components.

第一，连接权矩阵为强连通布尔矩阵，此时模糊双向联想记忆网络的最大极限环长度为连接权矩阵乘积的周期指数，从而极限环具有可达性；第二，两个强连通分支有路径连接，此时如果两个强连通分支的周期指数互素，那么网络的最大极限环长度为其最大者，否则，网络的最大极限环长度就等于二者的最小公倍数；第三，n个相邻强连通分支有路径连接，给出了计算最大极限环长度的方法，通过激发模式的变化，逐渐减少强连通分支的个数，直到只有两个分支。

Due to the fact that test application time is proportional to the length of the overlapped vector, except that the length of the overlapped vector is far less than the sum of the length of the original individual test vectors, minimal test application time can be obtained.

由于测试应用时间与重叠向量的长度成正比，而重叠向量的长度要远小于原始测试向量的长度总和，从而减少了测试时间。

The paper is firstly presented that the vector modulus length of no less one inclusion of one polished sample surface,in stead of the max length,can be represented of the max length of multi-inclusions.

本文根据 ASTM E2283-03的原理，提出采用矢量模的方法解决同一检测面中出现多个夹杂物的最大长度问题。

Its decompression architecture requires only a finite state machine and a cyclical scan register whose length is the same as that of the data block. Compared to the length of the cyclical scan register required in Golomb and FDR codes, which is equal to the length of the test vector, hardware cost in the proposed method is less than that in Golomb and FDR codes.

测试源划分技术是解决这一问题的主要方法，它是将ATE中的部分测试功能转移到被测试的芯片上，芯片之外主要建立一个经过变换的测试数据存储源，以减少测试数据的传输，同时在芯片上又不需要花费太多的硬件执行数据变换，实现测试模式的生成。

According to our present broadcasting situation,the thesis proposes using new technology to update and reform the present HFC. It also suggests broadcasting using self-advantage and arranging EPON in order to win the supermarket.

论文从我国广电的现状出发，结合实际，积极倡导采用新技术更新、改造我国现有的HFC网络；倡导广电现阶段利用自身优势，部署EPON网络来赢取市场。

A new general kinetic equation was derived in which the effect of the removal of condensation water was taken into account completely, and was applied to the polyesterification kinetic study of AA/HPHP and AA/NPG. It was found that the reaction order of self-catalyzed polyesterification was not constant. For these polyesterifications, the reaction order was 2.5 at a low temperature, while 3.0 at a high temperature.

考虑缩合水的排除对反应体系的影响，用体积浓度单位推导出一个新的聚酯反应总包动力学方程，并应用到AA/HPHP和AA/NPG两个聚酯化反应的动力学研究中，研究发现，自催化聚酯反应的反应级数并不是固定值，对于AA/HPHP和AA/NPG两个聚酯化反应而言，低温时反应级数为2.5，高温时反应级数为3.0。