- 更多网络例句与周期的模相关的网络例句 [注:此内容来源于网络,仅供参考]
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The conceptions of spectral and module of almost periodic sequence in Banach space are introduced,which are similar to those of almost periodic function in Banach space.
引入了Banach空间中与概周期函数类似的概周期序列谱与模的概念,并证明了概周期序列的谱与模有与概周期函数谱与模一样的性质。
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It concludes that the mode of the linear pe-riodic time-varying vibration system is complex mode and isperiodically time-varying .
通过研究发现,线性周期时变齐次系统的模态不仅具有复模态的性质,而且为周期时变性。
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The mode field of photonic crystal fiber structured with hexagon symmetry hole cladding was analyzed by coupled-mode, and the effective indexes of base mode of different wave length were got. The characteristics of this photonic crystal fiber grating were computed and simulated by coupled-mode method and transmission matrix method. Moreover, the differences were compared between conventional fiber grating and photonic crystal fiber grating on their reflection spectrum and delay.
利用多极法对包层空气孔为正六边形对称结构光子晶体光纤的模式场进行了分析,计算出不同波长下基模的有效折射率,结合使用模式耦合理论和传输矩阵法对基于光子晶体光纤的布拉格光栅特性进行了计算和仿真,对比了常规单模光纤所成光栅与相同光栅周期的光子晶体光纤布拉格光栅反射谱及时延特性之间的差异。
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The theory of accretion disks are important for many astrophysical phenomena, including Quasars, active galatic nucleic, X-ray binary stars, and young stellar objects. The most important branch of accretion djsk theory is the stability properties of djsks. It is widely considered that the luminosity variations of various astronomical objects are associated with the instability of accretion disk. The viscosity plays an important role in the accretion disk theory, and magnetic field exists commonly in astronomical phenomena. A more realistic analysis of the stabihty of the accretion disk should include both the radjal and azimuthal perturbations because of the strong shear of viscous flow.In this paper, according to the luminosity Variations of Various astronomical objects, we study the radial-azimuthal instability of an isothermal with magnetic field. We find that the radial and azimuthal fields B〓,B〓 are mainly responsible for enhancing the instability of the magneto-acoustic modes and non-axisymmetric modes,and that pulsational oscillations are larger in the radial than in the Z direction. The model may be useful in explaining the periodic light variation of FU orionis and. T Tauri stars.
在许多天体物理现象中,例如活动星系核,X-射线双星和年青的恒星理论中,吸积盘理论起着重要的作用,而吸积盘理论中的一个重要分支是吸积盘的不稳定性理论,普遍认为活动天体的周期,准周期光变现象与吸积盘的不稳定性有关,在吸积盘理论中,粘滞起着重要的作用,而磁场是天体物理中普遍存在的现象,对于几何薄吸积盘不稳定性分析,由于强剪切流的缘故,应该包括径向和环向扰动两个方面,本文结合天体物理中的各种周期,准周期光变现象,研究了含磁场的等温薄吸积盘的径向-环向振荡不稳定性,结果表明:磁场的径向和环向分量对磁声模和非轴对称模的不稳定性的增加起着主要的作用,且径向振荡大于轴向振荡,所得结果有利于解释FU Orionis和T Tauri Stars的周期光变现象。
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(1) Under the estrous cycle of rat is not identified, through supplementary estrogen after surgery, the model can also be successful; Moreover, different doses of estrogen did not affect the rate of success.
(1)在不确定大鼠动情周期的情况下,通过术后补充雌激素,模型也可成功建立;同时过高剂量的雌激素对成模率没有影响。
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Additionally, we analyzed the thermal-decay rules of LPGs. We use temperature-compensating package to reduce the sensitivity of temperature of LPGs. At the end of this paper, we summarized the key technologies required during practical application of LPGs, During this paper, we obtained some inventional results as follow: 1. We deduced waveguide modes of single and many mode fibers by use of Maxwell equation.
论文工作期间,主要取得了以下几方面的成果:一、我们利用Maxwell方程,推导了单模和多模光纤的导波模式,同时利用耦合模原理,简要推导了反射式光纤光栅的模式场分布及相应的模式特征方程;采用弱导光纤近似理论,严格推导了透射式长周期光纤光栅的模式场分布,得到了光栅周期与光波长间的对应关系,这是分析长周期光纤光栅光谱特性的有力工具。
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Moulding technology in a variety of packaging such as die-cutting, folding indentation membraned pasting, fenestration, veneer, composite, cutting, bag, etc so as to meet the rapidly growing packaging market multivariety, high-quality, short-period requirements.
通过多种包装成型工艺如模切压痕、烫金、折叠糊盒、开窗、贴面、复合、分切、制袋等,满足迅速增长的包装市场多品种、高质量、短周期的需求。
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On the basis of intervene area of two platforms of die cutting machine in dieing process, the model of press was established.
根据模切机的两大平台在模切过程的干涉面积,建立了模切压力模型,利用计算机编程分析得到了模切压力在一个运动周期内的变化情况,为提高模切机的工作性能提供了理论依据。
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But line rotary cutter die cutting machine is also a costly Rotary processing cycle length-cutting roller.
但连线圆压圆模切也有模切刀具成本较高圆压圆模切辊加工周期长的缺点。
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Results show that in recent years, the summer rainfall in Harbin displayed the most apparent cyclical variation on a 29-38-year scale, the largest modulus, and the strongest energy; and the summer rainfall in Nenjiang did an obvious cyclical variation on a 19-30-year scale, and its energy value is quite large. Both the two cyclical variations showed a trend of being stronger in energy with the time.
结果表明:哈尔滨近年来夏季降雨在29~38a尺度周期变化最明显,模值最大,能量最强;嫩江夏季降雨在19~30a周期变化较强,能量值较大;2个周期变化都具有随时间推移能量进一步加大的趋势。
- 更多网络解释与周期的模相关的网络解释 [注:此内容来源于网络,仅供参考]
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modulus of periodicity:周期的模
modulus of elasticity 弹性模数 | modulus of periodicity 周期的模 | modulus of rigidity 刚性模量
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modulus of rigidity:刚性模量
modulus of periodicity 周期的模 | modulus of rigidity 刚性模量 | modus tollens 否定式
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punch:冲头
下料加工的冲头(Punch)及模(die). 是冲压模具中维护周期最短的零件. 工具形状、间隙、表面粗糙度、材质等,都会影响工具寿命. 若使用至异常磨耗状态时,研磨量就会增多,也会缩短工具的寿命. 可从进行维护的加工数及毛边高度双方来进行管理.
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sink mark:缩痕
此一系统将熔胶自注射机传送至模腔,如果配置或尺寸不当,会产生各种各样的问题,如短射(short shot)、缩痕(sink mark)、缩孔(void)、流痕(flow mark)、熔接痕(weld line)、长周期时间等等,使得产品的合格率偏低.
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sprue:竖浇道
熔胶输送系统提供让熔胶从射出机喷嘴流到模穴的通道,它通常包括:竖浇道(sprue)、冷料井(cold slug well)、主流道、分枝流道、和浇口(gates). 充填与保压阶段结束,熔胶在模具里完全凝固后,再打开模穴取出塑件. 冷却时间在整个成形周期占非常高的比例,
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Gates:浇口
熔胶输送系统提供让熔胶从射出机喷嘴流到模穴的通道,它通常包括:竖浇道(sprue)、冷料井(cold slug well)、主流道、分枝流道、和浇口(gates). 充填与保压阶段结束,熔胶在模具里完全凝固后,再打开模穴取出塑件. 冷却时间在整个成形周期占非常高的比例,
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LOCATIONS:位置
一些常见的ProModel应用包括:(1)以时钟时间(Clock)为基准(2)以使用时间(Usage)为基准(3)以工作周期(Cycle)为基准(4)以整备(Setup)为基准(5)以工作班次(Shift)为基准(1)制程模组:定义系统中各位置(Locations)的流程逻辑及输有了