查询词典 statistical accuracy

Based on the regular Fourier matrix, a new set of accuracy factors is proposed for the nonuniform fast Fourier transform algorithm to improve the accuracy of transformed data.

本论文研究非均匀的傅利叶快速转换演算法中准确因子对运算结果准确性的改善，并提出非均匀哈特利快速转换的演算法。

An detecting system for feeding device for drills accuracy was established according the northern production condition in our country, wheat、 soybean and corn were collected as the trial samples, experiment project was established according to combination and put into practice, each combination experiment was repeated three times, the detecting accuracy was increased effectively.

按照因子试验设计制定试验方案并组织实施，采集了小麦、玉米、大豆条播试验的视觉检测样本，每个试验选择三个重复，样本容量满足排种器30转的要求。

Article 1 These Measures are formulated in accordance with the "Meteorology Law of the People's Republic of China" with a view to protecting meteorological sounding environments and facilities, ensuring the smooth carry-out of the meteorological sounding work, guaranteeing the representability, accuracy and comparability of the meteorological sounding information obtained, improving the capacities of monitoring climate changes, the accuracy of meteorological forecast and the level of meteorological services, so as to provide reliable safeguard for national economy and people's lives.

第一条 为了保护气象探测环境和设施，保证气象探测工作的顺利进行，确保获取的气象探测信息具有代表性、准确性、比较性，提高气候变化的监测能力、气象预报准确率和气象服务水平，为国民经济和人民生活提供可靠保障，根据《中华人民共和国气象法》，制定本办法。

So it can be avoided that the computation accuracy is lowered and the calculation result is hard to be convergent for the odd state of transformation matrix.The computation accuracy of wavelet Ritz method and wavelet Galerkin method has been improved so the special'microscopic'property could be fully expressed. An effective method is offered also to solve the problem of high stress gradient and some other odd state problems in engineering.

从而避免了由于转换矩阵奇异而造成精度下降且计算结果不易收敛的问题，提升了小波Ritz法和小波Galerkin法的求解精度，使小波分析的"显微"特性得以充分发挥，并为应力大梯度问题和工程奇异问题的有效求解提供了强有力的计算手段。

The optimal reconstruction windows of patients with stable HR(≤75 bpm and≥91 bpm) were concentrated in 71%,ranged from 65%-80%, and in 41%,ranged from 32%—50%,respectively.The prospectively ECG-gated DSCT coronary angiography can be used in patients with stable HR(≤75 bpm and≥91 bpm) in abstract.②To explore the clinical application of prospectively ECG-gated transverse DSCT coronary angiography.Methods Two hundreds patients[Body mass index:23-25 kg/m~2,122 patients(average HR≤75 bpm),78 patients(average HR≥91 bpm)]with suspected or known coronary artery disease underwent prospectively ECG-gated transverse DSCT coronary angiography,among them,30 patients underwent selectively coronary angiography,grouping them into 2 groups according to the average HR of scanning.Group A(17 cases,HR≤75 bpm),group B(13 cases, HR≥91 bpm),the DSCTA results were compared with SCAG.Then,calculate the accuracy of patients in each group and evaluate the agreement of accuracy between DSCTCA and SCAG by Kappa statistics.

方法回顾性分析200例行适应性前瞻性心电门控双源CT冠状动脉血管成像的患者(排除扫描过程中，屏气配合差，出现心律不齐的患者及行支架置入或搭桥术后复查的患者)，包括屏气时平均HR≤75 bpm患者122例，HR≥91 bpm患者78例；其中30例同期行选择性冠状动脉血管造影，按屏气时HR将其分为2组，A组17例：HR≤75 bpm，B组13例：HR≥91 bpm，分别与金标准SCAG对照，计算2组患者的阳性诊断准确率，应用SPSS 13.0统计学软件，利用Kappa检验比较每组患者的2种诊断方法诊断结果的一致性，利用两样本率x~2检验，比较2个心率组间的诊断准确率有无明显统计学差异，并计算此30例患者的平均有效辐射剂量。

The conclusion is provided as a theoretical basis for practical application. Furthermore, from both sites of experiment and theory, the kinematic accuracy and laser scanning accuracy of the LPS-600A machine are studied.

从理论和实验两方面研究了机械运动精度及激光束扫描精度的影响因素，利用激光双频干涉仪对LPS-600A的机械运动精度进行了测试。

Results: The location and qualitative accuracy of MSCT was 100%,97% respectively. The accuracy for TNM preoperative staging was 69.7%, 78.8%, 100%. The sensitivity and specificity of invading tunica serosa was 77.8%, 33.3%. The sensitivity and specificity of lymph node metastasis was 80.9%, 75%.

结果：MSCT对引起梗阻的肿瘤定位、定性准确率分别为100%、97%，对其TNM分期的准确率为69.7%、78.8%、100%，对其浆膜外侵犯的敏感性和特异性分别为77.8%、33.3%，对淋巴结转移的敏感性和特异性分别为80.9%、75%。

Servomechanism is one of most important subsystem of rocket, and servo valve is the core part of servomechanism. Feedback stick is a precise and low stiffness part and its machining quality and stiffness accuracy determine the accuracy and reliability of servo valve working.

伺服机构是火箭最重要的分系统之一，而伺服阀是伺服机构的核心，反馈杆是伺服阀中的精密低刚度元件，它的加工质量和刚度精度直接影响伺服阀的工作精度和可靠性。

Main job is to guarantee the scraping interaction and equipment on both sides of the friction surface or can obtain higher precision and accuracy, precision and shape accuracy, precision and contact transmission because of good lubrication, manual and repeatedly is worthy, large amounts of wind, time-consuming, scraping the time needed for different devices vary, such as boring slider and slide block wind profiling, between the match before measuring clearance between the original value, and then according to the technical requirement to measure the value of time and scraping scraping, then apply DanFen red on the slider, manual let slip on the slide seat back and forth, they do straight-line movement between full contact and friction, reoccupy scraper scraping friction creates the contact point, so repeatedly, until the technical requirements for the match, single within 2 days, must blow to the boring if all the time to work with wind, a half month is required.

刮削过程。刮削工作主要是为了保证设备相互接触并摩擦的两面间能获得较高的尺寸精度、形状精度、位置精度、接触精度、传动精度和良好的润滑，因是手工操作且需反复配刮，故工作量大，耗时较长，设备不同，刮削所需时间也各不相同，例如镗床上滑座与下滑座间的配刮，刮削前先测量出二者之间原有的间隙值，然后根据工艺要求测算出需刮削值及每次的刮削量，再将红丹粉涂于上滑座之上，手工让上滑座在下滑座上来回做直线运动，使它们之间充分接触和摩擦，再用刮刀刮削摩擦产生出的接触点，如此反复多次，直至技术要求范围之内，单此项配刮需2天左右，若对于整个镗床所有配刮工作的时间总和，则需半个月左右。

With regarding to those factors affecting the measurement accuracy of spectrophotometer, the accuracy of wavelength was the most important one.

摘 要：通过对影响分光光度计测量准确性的因素进行分析，认为波长准确度是其中的主要因素。

There are different types of personal loans available.

有许多不同类型的个人贷款优惠。

The above mentioned teaching model of spiral rising can be used to avoid rigidness in teaching.

上述螺旋式上升的教学模式，可以避免教学形成模式後的僵化现象。