计量基准

基本解释 (translations)

metewand  ·  meteyard

与计量基准相关的网络例句 [注：此内容来源于网络，仅供参考]

Through the international cooperation the metrologists are striving to redefine the mass standard depending on unchanging properties of nature based on the concept of Avogadro constant and Planck's constant.

近年来，计量学家通过国际合作，试图基于自然的不变性质、阿佛加德罗常数和普朗克常数的概念重新定义质量基准。

In principle this standard is a self developed automatic balance bridge,in which its resistance arms can be changed automatically,and is used for the calibration of the RF voltage.

我国于1980年建成射频电压基准[1]，20多年来，它在保证射频电压计量器具的量值准确和统一的工作中做出了宝贵的贡献。

The results of theoretical analysis and experiments indicate that in the frequency band of 10 to 3 000 MHz and voltage range of 0.1 to 2 V,the uncertainty is 0.25% to 0.7% and the confidence level is 99.73%. Metrology ; Voltage standard ; Bolovac ; Thin film bolometric bridge with resistance regulation network circuit ; Double thin film bolometer ; RF mount ; Uncertainty evaluation

在近期的技术改造[2]中，我们研制出电阻臂可变的自动平衡电桥，重新研制了双薄膜测热电阻，建立了射频电压自动校准系统，从而使该基准的计量性能有了很大提高，其主要技术指标如下：测量范围为0·1~2·0V；频率范围为10~3 000MHz；不确定度为0·25%~0·7%(k=3)；工作方式为自动测试。2工作原理和构成2.1工作原理射频电压基准是建立在功率替代原理的基础

National measurement standards may be primary standards, which are primary realizations of the SI units or agreed representations of SI units based on fundamental physical constants, or they may be secondary standards which are standards calibrated by another national metrology institute.

国家测量标准可以是基准，它们是 SI 单位的原级实现或是以基本物理常量为根据的 SI 单位约定的表达式，或是由其他国家计量院所校准的次级标准。

NOTE 3 Calibration laboratories that maintain their own primary standard or representation of SI units based on fundamental physical constants can claim traceability to the SI system only after these standards have been compared, directly or indirectly, with other similar standards of a national metrology institute.

注3： 持有自己的基准或基於基本物理常量的 SI 单位表达式的校准实验室，只有在将这些标准直接或间接地与国家计量院的类似标准进行比对之后，方能宣称溯源到 SI 单位制。

Also it can be used in the nuclear science and engineering research for absolute measurement of nuclear decay rate.

它可供计量实验室建立放射性活度基准设备用，也可用于核科学研究和工程中核衰变率的绝对测量。

For example, since the earth to the base, relative to the sun to measure time to get the sun when the time is measured relative to the stars, known as the sidereal time, to atomic transition frequency as a benchmark time for the system is called atomic time.

例如，以地球自转为基准，相对于太阳来计量时间得到的是太阳时，相对于恒星来计量时间，称为恒星时，以原子的跃迁频率为基准的时间系统称为原子时。

The results presented in this work can be used as a bench mark against which to evaluate the significance of the stress value obtained from empirically based nonmetric multidimensional scaling. In addition, the suggestions for the use of stress values as goodness of fit measures were proposed.

研究结果可做为实际应用压力系数评估非计量多向度量尺法之构形适合度的参照基准，此外，研究者就研究发现提出以压力系数判断和决定资料之构形向度时应注意的事项。

Finally this paper achieves a new method about Modeling and simulation of the liquid cargo tank. 3 The calculation of tank capacity based on UG/CAD modeling is studied in this paper . The calculation datum point is gotten by interposition of ship hull at first. Then many datum plane that go through different sounding and heel is created . The cad modeling of oil is created by the bool of the datum plane and the cad modeling of tank.

在使用UG建立准确的计量舱满舱CAD模型的基础上，采用插值得到计量舱计量基准，根据不同测深和不同纵倾值，建立一系列计量液位面，计量舱满舱CAD模型和计量液位面布尔运算后得到实际油液的CAD模型，通过计算油液CAD模型的体积，实现对计量舱容积的计量。

Benchmarking is an effective way to achieve the ultimate competitive advantage and superior customer satisfaction.

基准计量是获得根本性的竞争优势和令顾客十分满意的有效途径。

与计量基准相关的网络解释 [注：此内容来源于网络，仅供参考]

absolute pressure：力

注5:绝对压力(absolute pressure)是以绝对真空时零压力为基准计量的压力. 在压力单位后加字母A或a表示. 注6:表压力(gauge pressure)是指压力容器内部压力与环境大气压力的差值. 在压力单位后加字母G或g表示. 注7:在压力容器设计中,如无特别指明,

geographic longitude：地理经度

地面上某点的地理经度(Geographic longitude)是这样来确定的:以格林子午线为基准,用该子午线与某点子午线之间所截的赤道短弧,作为某点的地理经度(l). 地理经度的计算方法是:从格林子午线起算,沿赤道向东或向西,由0到180计量,计算至该点子午线,

method of principal axes：轴法

(a)权利金计算基准(Royalties Measurement)―对於权利金的定(Bartelett's Test of Sphericity)来进行此种检定;其检定统计量为x,如计算之x2 值大於本构面进行因素分析法时,采用主轴法(Method of Principal Axes)萃取潜伏因素.

Cost principle：成本原则

cost basis 成本基准 或称成本原则(cost principle). 会计记录 和会计报表所使用的一种计价方法. 其所 依据的假定是认为成本和折余成本是计 量资产和经济业务的有效和切实可行的 计量方法.例如,固定资产是以原始购置 成本计价的.

reference master gauge：校对控制规

reference mark 控制点 | reference master gauge 校对控制规 | reference measuring instrument 基准计量仪表

TEF：毒性当量因子

二恶英的毒性与异构体结构有很大关系,各异构体浓度的综合毒性评价方法一般以TCDDs为基准,利用TCDDs的毒性当量(TEQ)来表示各异构体的毒性,称之为毒性当量因子(TEF),其它异构体的毒性以相对毒性进行评价,其计量单位常采用ng-TEQ/Nm3,