查询词典 standard deviation

The correlation coefficient of 0.9995 (n=5) and relative standard deviation of 1.3%(n=11) were achieved at 1.0×10~(-7) mol/L of ascorbic acid.

方法测定抗坏血酸的线性范围为1.0x10~(-9)～2.0×10~(-6)mol／L，检出限(3σ)为5.0x10~(-10) mol／L，相对标准偏差为1.3％1.0×10~(-7mol／L，n=11。

The relative standard deviation for five determinations of 1.0×10-5 mol/L uric acid is 3.0%.

对1.0×10-5 mol/L尿酸平行测定5次，相对标准偏差为3.0％。

The approach takes a basis of the local statistical parameters of the logarithms of fatigue lives at the reference load. According to an assumption that the material constants in each relation are concurrently in same probabilistic level, the curves is described by a general form of mean and standard deviation curves of the logarithm of fatigue life, in which four material constants are at most contained.

以参考载荷试验数据的统计参量为基础，按照每个模型中材料常数协同处于相同概率水平原则，将曲线表示为对数疲劳寿命均值和均方差线的广义形式，至多4个材料常数。

Then again, the move in energy prices that caused the collapse last year of Amaranth, the hedge fund,was a nine standard-deviation event.Perhaps modellers do not know the universe as well as they would like to think.

其实历史早在去年就上演过一次，能源价格的变动导致了对冲基金Amaranth的破产，当时Vix的涨幅达到了900点。

In traditional way, selection of optimal wavenumber ranges is based on the absorption characteristics of standard spectra, while this may introduce some deviation to the result due to its low capability of anti-interference.

传统波数范围的选取主要根据标准光谱的特征吸收，存在抗干扰性较差、在实际情况中容易出现较大偏差的问题。

All the people were divided into two groups: healthy persons and patients, and were analyzed with HP5500 sonograph. Average image intensity, peak to peak intensity and standard deviation of image intensity of renal were measured and normalized by IBS of renal sinus and expressed as IBS%, PPI%, and SDI%.

将全部研究对象分为病例组和正常对照组，应用HP5500型超声诊断仪分别检测其肾脏的图像平均强度、图像峰—峰强度、图像强度标准差，并计算标化的背向散射积分、标化的图像峰—峰强度、标化的图像强度标准差，分别对各值进行分析比较。

Electrician Cheng checks and accept a standard: Switch of leakage of electricity is installed it is correct, normal to use; The installation of electric parts of an apparatus, equipment is secured should firm, level off; Experiment of electric equipment electrify, lamps and lanterns tries bright reach lamps and lanterns to control function good; The exterior of parts of an apparatus such as box of switch, electrical outlet, terminal is in good condition, insulation parts of an apparatus is flawless, installation is firm, smooth, installation means accords with a regulation; The switch of paratactic installation, electrical outlet the deviation of terminal box, the clearance of periphery of the face plate of box of dark outfit switch, electrical outlet, terminal, box accords with a regulation; Authority of function of weak cable system is complete, satisfy use requirement, implemental installation is firm, smooth.

电气工程验收标准：漏电开关安装正确、使用正常；电气器件、设备的安装固定应牢固、平整；电器通电试验、灯具试亮及灯具控制性能良好；开关、插座、终端盒等器件外观完好，绝缘器件无裂纹，安装牢固、平正，安装方式符合规定；并列安装的开关、插座终端盒的偏差，暗装开关、插座、终端盒的面板、盒周边的间隙符合规定；弱电系统功能权齐全，满足使用要求，器具安装牢固、平正。

Methods 42 cases mature neonate with MSCT scanning in lung were collected and randomly divided into three groups averagely. The tube current was 50 mAs and 30 mAs for low dose scanning and 200 mAs for routine dose. The CT value of region of interesting and standard deviation were measured in the aorta that region of carina of trachea. And compared the noise, image quality, CT dose index and dose length product between two low-dose scannings and routine dose.

42例足月新生儿随机等分成3组分别行低剂量30mAs、50mAs及常规剂量200m AsMSCT胸部扫描，统一于气管分叉处测量并记录主动脉CT值及标准差，比较两低剂量扫描与常规剂量扫描的噪声、图像质量、CT剂量指数和剂量长度乘积等差别。

Also, the performance of four techniques, using different approximation to estimate the equivalent peak value of shear stress and strain were investigated for the purpose to determine the equivalent shear modulus, damping, excess pore water pressure and residual strain induced by seismic loading, in which the equivalent peak value was computed in terms of its standard deviation and the corresponding peak factor.

利用上述动力有限元程序分别对水平地基进行了总应力、不排水有效应力和排水有效应力随机动力响应分析，并通过4种不同的方法来计算地基的等效剪切模量、阻尼比、振动孔压和残余剪应力。

The results show that the RIEMS can simulate the pattem and seasonal cycle of standard deviation of surface temperature and precipitation. Meanwhile,RIEMS is unable to simulate inter-annual variability of precipitation in April and July, although it does pretty well for January and October precipitation.

结果表明，模式能够较好地模拟出温度和降水的标准差的空间分布和不同区域平均标准差的年变化，同时，对降水的年际变率检验发现，模式能够模拟出一月和十月降水的年际变率，而不能模拟出四月和七月降水的年际变率。

The system can be widely used in belt weighing and batching process control,etc.

介绍了基于智能模糊控制的嵌入式配料系统的设计方法，对模糊PID控制过程和系统调零作了重点的讨论，同时给出了PID控制的程序流程图和系统定长调零子程序。

"I dunno," she answered,"but if you show me aroun', I'll recognize it from the lighthouse just outside the porthole."

"我不知道，"她回答说，"如果你能带我转转，我能认出来的，因为灯塔就在舷窗外。"