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A ∞-semimodule over a ∞-semiring is introduced in this paper, based on which, the absorb subsemimodule and the congruence relation on a ∞-semimodule are proposed.

引入∞-半环上的∞-半的概念,在此基础上引入吸收子半以及∞-半上的同余关系等概念,得到一些初步性质。

Constant Angular Velocity mode and Constant Linear Velocity mode are integrated to build a single spindle motor control module to incorporate with long-seek servo. CAV mode and CLV mode are performed to show its feasibility. The experiment results showed that the pick-up-head can perform arbitrarily track-jump command, quite well.

此外,在主轴马达伺服部分,提出以跨轨旗标讯号来决定使用『碰-碰』控制法则让主轴马达转速变化的执行时间,也将主轴马达伺服中的等角速度控制组与等线速度控制组整合成功,形成单一的主轴马达控制组,使与长寻轨伺服结合而更易於操作,让不论内、外寻轨的任意跨轨命令皆可以达成定线速度或是等角速度的控制目标。

The first disadvantage of MMI device is wavelength sensitive, which leads to restricted applications. To reduce the wavelength insensitivity in optical network applications, the demand of light source with a specific wavelength is needed, especially for power splitters. For this reason, a wideband criterion for MMI splitter is proposed. The basic principle is based on reducing the interference length difference and making it shorter than the spot size for constructive mode interference. Simulation results show the spectra of proposed MMI splitter is wide enough (1.26-1.61um) to cover the fiber communication band and the size of the splitter is more compact than that of the conventional MMI or Y-branch splitter.

干涉元件的第一个缺点为波长敏感,此缺点会限制其在实际上的用途;因元件在网路上的应用时,通常都需要降低波长敏感性,以减低对光源波长准确性的要求;有鉴於此,本论文提出多干涉分光器的宽频标准;基本原理是建立在缩短其多干涉区的长度差,并使之小於建设性干涉的光点大小;透过拟后发现,操作频宽可涵盖光纤通信全波段(1.26-1.61um),且长度小於Y形分支结构的分光器。

For analysis of traditional experimental modal, hammer and shaker are often used to force the structure as the clamped-clamped beam to raise the vibration of the structure, meanwhile accelerometer is placed on the structure as a sensor, then the modal parameter could be found.

传统实验态分析大多使用冲击鎚或激振器施加点力於结构例如固定梁,做为驱动器激发结构的振动,利用加速度计做为感测器置於结构上,以求取结构之态参数,但传统之态实验设备都有实验操作不易以及价格昂贵的缺点。

4 Move cross hair to the upper side of the die (but not on the die corner due to possible chip out) search for unique pattern. Press ENTER.

移动跟踪球到的上部,(由于可能离开所以不是在的角落)然后寻找独特的式,按" ENTER "确定

Put die on the die seat, adjust cross- plate and transducer draging plate of up and down, so that the steel needle can be inserted into die hole to adjust the pressure of weight, and then place the abrasive, open power switch of ultrasonic and rotating switch of die seat.

具放在座上,调节十字脱板及换能器上下拖板,使钢针插入孔内,调整砝码压力,然后放上磨料,打开超声波电源开关和座旋转开关。

The results show that as the distance of waveguide to mirror is short, the couple efficiencies for EH11 mode of the cylindrical mirror and the spherical mirror are similar but the cylindrical mirror has stronger restraining function on EH21 and EH12 modes, and as the distance of waveguide to mirror is long, the cylindrical mirror has more restraining function on EH21 mode and less restraining function on EH12 mode.

同时相对球面反射镜,柱面反射镜对EH21和EH12具有更强的抑制作用。在d较大时,相对球面反射镜柱面反射镜对EH21的抑制作用将会变得更强,而对EH12的抑制作用将会减弱。标签 laser technique reflection coupling diffraction waveguide laser square waveguide cylindrical mirror

In general, the deformation pattern of ellipse shaped shell in dieless spinning is similar to that of a rotary one. Therefore, it is possible to spin a deep elliptic cylindrical shell if a cylindroid mandrel is adopted.

从总体上看,椭圆形锥壳零件的无芯旋压和回转形锥壳无芯旋压的变形规律相类似,由此可以推测,利用椭圆柱形芯实现椭圆形深筒零件的旋压也是可能的。

Rigidity movement analysis of elbow-bar framework is disposed to evaluate die-cutting press and its affect by using d'Alembert principle, whose result offers the design and use of enterprise reference, and establish a base for the test of die-cutting press.

应用达朗贝尔原理对肘杆机构进行了刚性动力学分析,评价切压力的大小及其影响因素,为企业设计和使用切机提供参考依据,也为切压力的测试奠定了基础。

Finally, we analyzed the relationship between the defect modes and s defect structures. The defect mode is most obvious where the defect structure is located. This confirms the relation between the defect mode and defect structure.

最后,我们分析了光子晶体缺陷态与缺陷结构的关系,发现缺陷态在缺陷结构处最为明显,证实在频谱中观测到的缺陷态,确实与所制作的缺陷结构有关。

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推荐网络例句

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失

But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.

但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。