与单检测器相比,平衡式检测具备更高的灵敏度,因为这种检测方式拒绝共模噪声,而且光能利用率更高。
Balanced detection provides better sensitivity over a single detector because it rejects common mode noise and is more efficient in light usage.
通过数值计算分析了原子运动速度、场模结构参数和平均光子数对光场二阶相干度和模间相干度的影响。
The influence of atomic motion, the field structure and intensity of photons on second-order correlation function and two-mode correlation function are obtained by numerical calculation.
双下模,180度回转,下模上顶加压,工作效率高。
Double lower shapes, 180 degrees turning, lower shape rise to press, and with high efficiency.
直接利用激光快速成型的原型树脂模,结合陶瓷型精密铸造技术,制得了高精度、低表面粗糙度、高使用寿命的钢模具。
The steel dies with high dimensional accuracy, low surface roughness and long service life have been quickly produced by using prototyping resin molds as patterns of ceramic investment casting.
为保证面板的质量,对砂石骨料、水泥、外加剂和坡面平整度、侧模安装质量及混凝土的塌落度等进行了严格的控制。
To ensure the quality of the deck, the quality of sand gravel aggregate, cement, additives, leveling of slope face and erection of lateral forms, and the collapse degree were controlled strictly.
将车辆模化为七自由度振动系统,采用频域法进行随机响应计算。
The vehicle is modelled as a vibration system with seven degrees of freedom.
算法基于混合模体模型学习,采用贪心策略,通过似然度最大化,逐次将新的模体加入到混合模型中。
Based on mixture motifs model learning through likelihood maximization, a greedy strategy that adds sequentially new motif to a mixture model is employed.
本文介绍了具有混合型三模余度结构的设计与实现。
This paper introduces the design and realization of hybrid structure with three modular redundancy.
在用偏振度作为反馈信号的动态偏振模色散补偿系统中,偏振度与差分群延时的关系对于准确快速的动态偏振模色散补偿很重要。
It is important to know how does the degree of polarization (DOP) change with differential group delay (DGD) when DOP is feedback information for adaptive PMD compensation.
作者采用这种方法,对大椭圆度的球形马克中的倾斜模不稳定性进行了研究。
An application is made to the problem of the tilting mode instability for spheromak without restriction in ellipticity .
研究了泡沫聚苯乙烯粒径、泡沫颗粒的粒度级配、成型发泡模具对EPS模表面粗糙度的影响。
The effects of the grain size and grain gradation of styrofoam particles as well as the expendable polystyrene(EPS)forming tools on the surface roughness of EPS patterns were studied in the paper.
对长周期光纤光栅传输谱谐振波长的应变特性用耦合模理论进行研究,推导出谐振波长应变灵敏度的解析表达式。
The strain sensitivity characteristic of long-period fibre grating (LPFG) was studied by coupled-mode theory and the strain sensitivity analytic equation of the resonant wavelength was deduced.
设计了滑模控制器和PID控制器分别对节气门开度和点火时刻进行自适应调节。
Both sliding mode controller and PID controller are designed to realize adaptive regulation of throttle opening and ignition timing respectively.
结合模流分析结果进行了浇注系统和冷却设计,保证产品有合理的外观品质及平整度。
The Moldflow analysis was introduced to designs of runners and cooling systems so as to ensure the appearance quality and surface level.
简要说明滑模摊铺机配套设备配合比设计,施工工艺及提高水泥混凝土路面的内在质量和动态平整度。
The text discusses mixture ratio design and construction technics of corollary equipment of slide spreading machine, and improve internal quality of cement concrete pavement and dynamic smoothness.
该放大器采用全差分结构以获得高输出摆幅,利用源反馈技术改善线性度,并设计了共模反馈电路以稳定共模输出电压。
The amplifier employs fully differential structure to obtain high output voltage swing, and uses source degeneration techniques to improve the linearity.
实验通过观察双纵模稳定激光的模式输出,分析了影响激光频率复现性与频率稳定度的因素,测量了稳定激光的功率和频率稳定度。
Through the experiment, the authors analyzed the factors which affect the laser frequency repetition and stabilization, and measured the stabilized laser power and the frequency stabilization.
凸模和凹模,可根据客户要求进行精加工,表面光洁度高,公差准确。
Punch and die, according to customer requirements for finishing, surface finish, tolerances.
研究了负压度、模样密度、浇注温度、金属静压头等工艺因素对消失模铸铁件充型速度的影响规律。
The filling speed of lost foam cast iron casting was measured by use of an integrated set of experimental equipment and a specially designed computer acquisition system.
文中引进模糊数学中的三角模算子与非模糊基数等概念,定义了数字图像模糊度。
A definition of the fuzzy degree of digital image is presented by introducing some concepts in fuzzy mathematics, such as triangular norm operator and non fuzziness cardinality.
在多台动模机组上做了大量相关试验,验证了本文所提出数学模型的正确性和有效性以及保护方案的灵敏度与可靠性。
A large number of experiments on different generators verify that the mathematical model is correct and effective, and that the protection schemes are sensitive and reliable.
基于自主研制的七自由度铺丝机,研究具有芯模的封闭构件自动铺丝路径规划技术,设计了通用的铺丝路径生成算法,可生成任意角度的铺丝路径。
Based on the seven-degree-of-freedom fiber placement equipment independently developed, the fiber placement path planning for closed composite parts with core models is researched.
不同真空度下消失模铸型硬度的测试结果表明,消失模铸型的硬度高于普通湿型砂铸型,并且硬度分布更均匀。
The mold hardness under different vacuum degree was tested. The results showed that the mold hardness of EPC process was higher than that of green sand mold and was more uniformly distributed.
在翻制模具模块时,采用数控加工的泡沫模样代替传统的木模,大大缩短了模具的设计与制造周期,同时提高了模具的精确度,降低了成本。
Nc machining foam pattern has been used to replace wooden pattern with shorter periodicity of mold design and manufacture, increased precision and reduced cost.
模切采用电动360度相位调整。
Grinding-cutting adopt electric 360 degree phase adjustment.
加强水平和垂直度监控,控制筒身倾斜及扭转;加强出模混凝土的收光和养护,保证出模混凝土的质量。
By monitoring the level and vertical degree, and controlling the tube not to slope and rotate, it guarantees the quality of the concrete out of formwork in terms of the maintenance.
图像均匀度指的是图像的均匀程度,它描述了MRI系统对体模内同一物质区域的再现能力。
The MRI image′s uniformity means the uniform distribution of the MRI image. It describes the reproduction of certain area of a phantom with MRI system.
特别是,当只考虑极向模耦合时稳定的漂移波,同时考虑环向场波纹度引起的环向模耦合时,变为不稳定。
In particular, it is found that the drift waves which are stable when only the poloidal mode coupling is considered may become unstable owing to the t...
消失模铸造工艺影响干砂紧实的主要因素是振动加速度和负压度。
The main factors influencing sand compaction on EPC are vibration acceleration and negative pressure.
消失模铸造工艺影响干砂紧实的主要因素是振动加速度和负压度。
The main factors influencing sand compaction on EPC are vibration acceleration and negative pressure.
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