计量

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

The method comprises steps: dissloving relative rare earth oxidant into nitrate to prepare rare- earth azotic acid solution, adding solid nitrate, boracic acid, citrate and urea according to proportion, mixing, calcinating with burning method and getting final product.

制备时，将相应的稀土氧化物溶于硝酸，配成稀土硝酸盐溶液，按计量比加入固体硝酸、硼酸、及柠檬酸与尿素，混合均匀，利用燃烧法灼烧，即得产品。

It also offers some suggestions on how to make the best use of the referee committee of track and field sports society as the brain truster and advisory body of decision in the construction and management of track and field sports referee staff, suggestions on taking a firm hold of teaching, helping and leading green-hands in completing the set of the orderly system of succession, and suggestions on improving the comprehensive management of the referee staff.

本文根据田径裁判工作的特点和要求，即工作的业余性，组织的松散性，室外工作，赛时集中；项目多样，规则复杂，规模不等，配套齐全，全面掌握，专长必擅，计量客观，直接见面，公正准确，独立裁决等，并通过对我国田径裁判员队伍基本现状的调查与分析，就如何加强田径裁判员队伍的建设与管理，提高其业务水平，试以初探。

The main brake adopts energy-consumed braking; the auxiliary brake adopts the new-type band brake; the mechanical drive adopts a driving method which combines cycloidal reducer and chain drive; the bailing metering unit adopts the digital control mode which uses the single-chip microcontroller as the central processing unit.

该绞车采用交流变频控制，实现无级调速；主刹车采用电动机能耗制动，辅助刹车采用带棘爪机构的带式刹车；机械传动采用摆线减速器与链传动相结合的传动方式；捞砂计量装置采用单片机微控器作为中央处理单元的数字控制模式。

In the late 20th century the toast. er oven replaced the breadbox both as a domestic appliance and as a standard unit of volume, often for humorous references."We were attacked by mosquitoes the size of toaster ovens."

20世纪末，烤炉不仅作为日常用品代替了面包罐，而且还成了一种计量标准，通常是为了达到幽默的效果("我们遭到了烤炉般大小的蚊子的袭击")。

The measurement for the stiffness of broacher body structure by laser holographic interferometry is introduced in this paper.

本文介绍了我们采用激光全息干涉计量方法在拉床床身结构刚度试验中的应用。

I miss them tonight, and know that my de bt to them is beyond measure.

是他们造就了今天的我。今晚我很想念他们，我对他们的亏欠无以计量。

After mainenervations being drawn out and being dried for 4 hours at 60℃,1156 samples of tobacco leaves from different tobacco producing-area were made into powder (≤0.13 mm). Reducing sugar, total sugar, nicotine, nitrogen, potassium and chlorine of more than 1000 samples from different tobacco producing-area were determined with classical chemical or instrumental methods. By scanning these samples with Fourier transform Near Infrared spectrometer (MARIXT-I produced by Bucker) we obtained their spectrograms, pretreated the spectrograms with a chemometrics software (OPUS 5.5) to debase the noises influence on spectrum information, and built a chemometrics model by means of Partial Least2Squares. The chemometric model was optimized some times and validated with some other samples.

选取全国不同烟草生产地区的1156余烟叶样品，采用相同的预处理条件(去处主脉，60℃烘干4小时)，处理成40目待测粉末样品，采用行业经典的化学分析方法或准确可靠仪器方法测定其常规成分含量，在条件一致(20℃～24℃，环境湿度≤40 RH%)的实验室环境中，使用市场上主流的傅立叶变换红外光谱仪(德国BRUKER公司生产的MARIXT-I)上进行图谱扫描，采用OPUS5.5化学计量学软件，对光谱进行适当的预处理，减弱以至于消除各种噪声对光谱信息的影响，用偏最小二乘回归法建立常规成分预测模型，并进行了反复优化和未知样品模型外验证。

In this era of knowledge-based economy, as the hi-tech companies burgeon, it is more and more important for management to measure and disclose the intangible assets properly.

随着高科技公司的大量涌现和知识经济时代的到来，对无形资产的计量与披露越来越重要。

You must measure the length by rule and line.

你必须准确地计量长度。

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％。