查询词典 RMS

Both push the limits of human survival at extreme depths: one using sophisticated technology and the other just a single breath. World-class divers Dave Apperley, Pete Mesley and Tim Cashman form a team to explore the wreck of RMS Niagara, a luxury liner sunk by a German mine in 1940. For over 60 years it has remained submerged in nearly 400 feet (120 metres) of water off the northern tip of New Zealand.

连白痴都能潜到水下一百米的沉船处，但若想安全地回到水面，就要靠技术了，在这个陌生的环境，这些潜水者寻找著世上最深的沉船之一，他们将用上足以媲美太空装备的科技，这可说是星舰迷航记症侯群，一心探索未知的领域，但有些人则很排斥水下呼吸器，只凭一口气潜到深海。

True RMS type, digital analog dual display!

真有效值型、数显模拟双重显示！

According to principles of software engineering, radioactive sources calculation and the working process of RMS simulation are realized under the real time simulation support system, ASCA.

在实时仿真支撑系统ASCA下，按照软件工程学的原则，实现对放射源的仿真计算和对辐射监测系统工作过程的模拟。

The study has focused on: 1 The research background and the current state of the power measurement were analyzed systematically, and then wavelet-based power measurement algorithm was certified feasible for astable signals; 2 We developed a new method of RMS and power measurement based on Dmeyer wavelet. After that three other wavelet measurement approaches were compared with Dmeyer wavelet-based measurement approach. Then the impact on measurement errors of amplitude frequency property and energy leakage of wavelet filter banks were deeply researched, and some measures were proposed to reduce it; 3 We developed a new strategy of power measurement algorithm based on lifting wavelet, which had calculation advantage compared with the first wavelet, so that it was more suitable for the realization of hardware; 4 The running system of wavelet-based power measurement algorithm based on DSP was proposed, and then it was realized on ICETEK-VC5416-A EVM board; 5 Existing problems and the further research direction of wavelet-based power sub-band measurement algorithm was discussed.

本文对基于小波变换的功率测量算法展开深入的分析研究，主要内容有：1）系统地分析了功率分解测量的研究背景、国内外的研究现状，并从能量守恒的角度验证了小波功率分频带测量算法在非平稳信号条件下的可行性；2）首次提出了Dmeyer小波变换有效值与功率的测量方法，进而通过对该方法与3种已经提出的小波测量方法的对比分析，深入研究了小波滤波器组的幅频特性和能量泄漏特性对测量误差的影响，并针对电网谐波的特点提出了减小影响的相关措施；3）首次提出了二代小波功率测量算法，对比一代小波功率分频带测量算法，它大大减少了算法实现的运算量及内存的需求量，从而更适合于硬件的实时实现；4）提出了小波功率分频带测量算法的DSP实现方案，并在ICETEK-VC5416-A EVM板上进行了实现；5）探讨了小波功率分频带测量算法目前仍存在的问题，并提出了进一步的研究方向。

NMath Stats contains a data table class with functions for computing descriptive statistics, such as mean, variance, standard deviation, percentile, median, quartiles, geometric mean, harmonic mean, RMS, kurtosis, skewness, and many more; PDF, CDF, inverse CDF, and random variable moments for a variety of probability distributions, including normal, Poisson, chi-square, gamma, beta, Student's t, F, binomial, and negative binomial; Combinatorial functions, such as factorial, log factorial, binomial coefficient, and log binomial; Multiple linear regression; Basic hypothesis tests, such as z-test, t-test, and F-test, with calculation of p-values, critical values, and confidence intervals; One-way and two-way analysis of variance and analysis of variance with repeated measures; Multivariate statistical analyses, including principal component analysis and hierarchical cluster analysis.

nmath统计包含一个数据表的阶层与职能计算描述性统计，如平均，方差，标准差，百分位，中位数， 25 ％，几何平均数，调和的意思是，有效值，峭度，偏度，还有更多的； PDF格式，民防部队，逆民防部队，并随机变量矩的各种概率分布，包括正常，泊松，卡方检定，伽玛，测试版，学生的吨，男，二项式，并负二项分布；组合的功能，例如阶乘，日志阶乘，二项式系数，并登入二项式；多元线性回归；基本假设测试，如的Z测试， t检验， F检验，计算p值，临界值，和置信区间；之一，双向和双方法方差分析和方差分析与反复的措施；多元统计分析，包括主成分分析和聚类分析。

Cross-stitch is often combined with other popular fo rms of embroidery, such as Hardanger embroidery or blackwork embroidery.

十字绣常和其他受欢迎的形式，如哈丹格尔刺绣刺绣或blackwork刺绣。

The RMS deviations of bond length and angle of these mutants are 0.0011nm and 2.457, 0.0013nm and 2.675° respectively.

在这两个突变体的结构中均未见到Glu189侧链方向的改变。

Based on Brune ω~2 source spectrum ,Hanks and McGuire deduced a simplified formula of RMS accelera- tion by stationary random vibration theory and Parseval theorem.

Hanks 和 McGuire 基于 Brune 的ω~2震源谱，借助平稳随机振动理论和 Parseval 定理给出了估计均方根加速度衰减关系的表达式。

The SA9904B,produced by SAMES company, is a three phase bi-directional energy/power chip and completes the measurement of RMS voltage , RMS current, powe, energy , power factor and frequency as the kernel of detecting unit.

本系统采用SAMES公司的三相双向电能／功率芯片SA9904B作为测量单元的核心来完成电压、电流、功率、电能、功率因数和频率的测量。

Digital RMS detector s principle and character are introduced in this paper,and compare with analogue RMS detector .

介绍了数字真有效值检波器的原理和性能并与其它真有效值检波器做了对比。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。