测高

The experiment results indicate that the presenting method possesses some advantages such as high precision, fast conversion speed, low cost, better practicability, intuitionist result, easy operation and high efficient.

实验结果表明：该测角方法精度高、转换速度快、成本低、实用性好，结果直观、操作简单、效率较高。

Two gene fragments of DEN-1(GenBank accession number DQ886390)and DEN-2(GenBank accession number DQ886391),differentially expressed between the ocular skin tissues of normal and albino turbot,were isolated by mRNA differential display and sequenced.It was confirmed by RT-PCR method that the expression levels of both DEN-1 and DEN-2 were down-regulated in the ocular skin tissue of albino turbot.The sequence homology search of DEN-1 revealed high sequence homologies with the UGGT genes of zebrafish and cattle,and the Ugcgl1 gene of Norway rat.High sequence homologies of DEN-2 were observed with the eya4 gene(the eye absent homolog 4)from red jungle fowl,zebrafish,human,Norway rat,mouse and dog.

应用mRNA差异显示技术，对比研究正常与白化大菱鲆有眼侧皮肤组织，克隆差异表达基因，经测序，RT-PCR 验证，差异表达基因片段DEN-1(GenBank登录号：DQ886390)与DEN-2(GenBank登录号：DQ886391)均在白化大菱鲆有眼侧皮肤组织中下调表达；通过BLAST检索发现，DEN-1与GenBank中的斑马鱼和牛的类似尿苷二磷酸-葡萄糖：糖蛋白葡糖基转移酶基因、与挪威鼠类似尿苷二磷酸-葡萄糖：神经酰氨葡糖基转移酶1(Ugcgl1)基因有较高同源性；DEN-2 与原鸡、斑马鱼、人、挪威鼠、家鼠和狗的眼缺乏同源框4(eya4)基因的同源性均较高。

It has following advantages:higher in frequency measuring accuracy,quich in regulation speed,higher in reliability,simple in man machine interface,etc..

提出了一种基于可编程控制器的水轮机调速器，它实现了用可编程控制器模块进行频率测量，具有测频精度高、调节速度快、可靠性高、人机接口简单等优点。

This paper focuses on the subject of high precision vertical pendulum tiltmeter, and studies deeply a series of problems that involve in high precision capacity micrometry sensor, the mechanical structure of the tiltmeter and its parts, adjusting pendulum and calibration of tiltmeter, and practical application of the vertical pendulum tiltmeter.

本文围绕高精度垂直摆倾斜仪这一主题，对高精度电容测微传感器，倾斜仪机械本体的结构及其零部件，倾斜仪的调摆和标定，以及垂直摆倾斜仪的实际应用等一系列问题进行了较为深入的研究。

First by testing the practical multilayer insulation in a cryogenic tanker, which is the carilometer in my paper,some affecting factors on multilayer insulation are analysed, then by using the low-temperature and vacuum environment caused by multilayer insulation, the effective thermal conductivity of multiple fiber paper with 5 layers is tested.Through Newton interativemethod,an empirical formula is deduced to computer the thermal conductivity of fiber paper,The errors between experimental thermal conductivity and the calculated conductivity by empirical formula are below10%,so the formula of fiber conductivity can be applied to practical enginnering.

为探索改善工程应用中高真空多层绝热层绝热性能的方法，本文实验研究中首先测量了包扎在实际低温储罐上不同结构的高真空多层绝热层的绝热性能，并分析了环境温度、环境压力，层数、不同隔热材料的组合等因素对工程应用中的高真空多层材料绝热性能的影响；然后利用多层绝热层中的低温真空环境测量5层干法纸在不同温度区间内的表观导热系数，在有限实验数据的基础上用牛顿迭代数值拟和出计算5层干法纸表观导热系数的经验公式，对比经验公式计算值和实验测量值，发现二者的误差在10%以内，因此在工程应用中可用本文的经验公式计算干法纸在低温下的导热系数。

A highly sensitive and specific nonradioactive DNA probe developed from DNA cloning methods has been used to detect PaWB phytoplasma in infected paulownia hosts.

以DNA选殖的方法所开发之非放射性DNA探针，具有高敏感度与高特异性，已应用於泡桐簇叶病茵质体之侦测。

It is an essential measuring tool in precision mechanical industry.

而发展非接触式高精度高测速的位移测量系统是其发展主流。

Then, based on the mean curvature, Gaussian curvature and the function of principal curvature, the minimal loci of the principal normal surfaces of curves, the curves with constant Gaussian curvature and the two curves of which the ratio of their functions is constant can all be obtained, as well as the properties of geodesic curve and lumbar curve.

再根据平均曲率、高斯曲率及主曲率函数，能得到曲线的主法线曲面的极小轨迹、常高斯曲率曲线及两个主曲率函数之比为常数的曲线。还给出曲面上测地线和腰曲线的性质。

Based on the experimental results, the wave height of progressive wave decreases gradually with the increase of the distance of artificial reef.

量测结果显示，当波浪於潜礁上方碎波时，波高有明显的减衰现象并随著向下游传递距离增加波高减衰情况越显著。

Devices in the test package include: a high-precision automated dimensional gauge designed for measuring the unique attributes of bottles, particularly threaded and crown finishes as well as weight and pushup; a pressure tester for performing buckle and bottom roll out tests; a dual-purpose tester that performs both fill point volume measurements and top-load tests; and a thickness gauge for high accuracy measurement of material distribution.

该成套测试仪器的装置包括：一种用于测量瓶子独特属性的高精度自动化尺寸测量仪器，特别是对螺纹瓶口和皇冠盖瓶口，以及重量和瓶子凹底的测量；一个用于进行凹凸和瓶底压平测试的压力测试器；一个进行灌装点容积测量和最大负载测试的双重目的测试器；一个高精度测量材料分布的测厚仪。

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％。