You can never get an exact measurement.

The exact measurement on switching time provides reference for optical switches using in different field.

准确测量光开关的转换时间为其应用在不同领域提供了参考。

The exact measurement of machined surface profile parameters is very important for assessing the functional behavior of components.

正确测量零件的加工表面轮廓参数对分析机械零件的使用性能非常重要。

As a core index of economic variable, exact measurement of real interest rates has an important impact on theory research and policy decision.

实际利率作为经济变量的核心指标之一，其准确的估测对理论研究、政策决策都有重要影响。

Objective A proportionally marked measurement ruler was made to deal with the problem with the exact measurement of the digital X-ray diagnosis within the pathological lesion.

目的设计制作一测量比例标识尺，以解决数字化X线机病变区的测量问题。

Results: 3D CT images of hip could directly show the relationships of fractures. Exact measurement of the femoral heads was successfully performed.

结果：髋关节三维CT成像能良好显示骨折空间关系，对股骨头可进行精确测量。

Study of the Content of Total Flavonoid in Fresh and Dry Houttuynia cordata Thunb The exact measurement of goat fluff exaggeration and the experiment of measuring humidity by microwave

鱼腥草干品、湿品中总黄酮含量的测定运用微波测湿实验对羊绒含水量进行精确测量

The exact measurement of keratometry and anterior chamber depth are of major importance for the implantation of intraocular lens ( IOL) in refractive surgery and the research of refractive errors.

准确测量角膜曲率和前房深度对于屈光手术中人工晶体屈光度的计算以及屈光不正的研究有着重要的意义。

After exact measurement of weight, length and diameter of pharynx for Pseudosciaena crocea, the model of analytical regression through computer was set up.

通过对大黄鱼体重、体长、咽喉径的准确测量，并将测量的原始数据经计算机统计回归分析。

The qualitative framework model of knowledge work provides an analytical method for us to understand and explain knowledge work system, but it cannot help with the exact measurement and comparison on quantity, which is an important basis to judge the merits of knowledge work.

知识工作的定性框架模型虽然为我们认识知识工作系统和解释知识工作现象提供了一个分析方法，但是它不能提供在量方面的比较和计量。

To know antenna performance and character well in depth, take exact measurement for antenna.

为了能深入掌握各种天线的性能和特点，必须对天线进行准确的测量。

Proposed a nwe method of exact measurement of small resistance.

提出了一种新的精确测量小电阻的方法。

The merits of this method are high measurement sensitivity, exact measurement result and the result of the waste can reach 10? 4, which is barely achieved by using other methods.

它的特点是对低损耗介质材料的测试灵敏度高，测试准确，损耗可测量到10-4的量级，这是其他方法几乎不可能达到的。

Exact measurement of micro-thrust is one of pivotal technologies of studying electric rocket.

微小推力准确测量是研究电火箭的关键技术之一。

The conventional methods of measuring temperature cannot realize quick and exact measurement.

传统的温度测量方法，无法实现温度的快速准确测量。

Note: This is not an exact measurement or an exact formula and should be treated as a rough approximation.

注意：这不是十分准确的测量或一个准确的公式，这只是个近似值而已。

Rough practical method of assessing or measuring sth, usu based on past experience rather than on exact measurement, etc ( and therefore not completely reliable in every case or in every detail)

（对事物）粗略但实用的估计方法（通常指凭经验而不作精确的计量等，故并非时时处处均可靠）

The error margin < 1% by exact measurement.

在该里程表中采用了精确测量的方法，使里程和速度测量误差均<1%。

The Theoretical Expression of Carbon Potential for Carburizing Atmosphere and Its Exact Measurement

渗碳气氛中碳势理论表达式及精确测定

Objective: Set up exact measurement of hospital efficiency Medical Illness Severity, Severity the accuracy of efficiency evaluation of military hospitals, and supply the methods basis for the comprehensive system of quality evaluation.

建立精确考核医院效率的测量方法，提高军队医院效率评价的可比性与科学性，为改进医疗质量评价指标体系提供方法学依据。

In the present system of fire controlling and alarming, it is essential to take the exact measurement and effective control of the actual temperature and its ascending speed in the detecting area.

在当前的消防报警控制系统中，对被探测区域温度的准确测量和有效控制是消防工作质量的根本保证。