水准测量

Roof released elevation of the line of control and the loading axis auxiliary line.

复验安装定位所用的轴线控制点和测量标高使用的水准点。

Often bench mark A surveyor's mark made on a stationary object of previously determined position and elevation and used as a reference point in tidal observations and surveys.

常作 bench mark 水准点：在事先确定了位置和高度的固定物体上的测量标记，用作潮汐观察与测量的参照点v.tr。

With reason price predominance and excellent quality become to choiceness fittings production for measuring instrument and measuring tools's factory.

由于我们的水准泡以其高清淅、透明的外观及内在精度准确度高等质量、合理价格成为各测量仪器、测量工具的生产企业的优良配件产品。

The main purpose of physical geodesy is to ascertain the outer Earth gravity field and geoid.

物理大地测量的主要目标是确定地球外部重力场和大地水准面。

By measuring the voltage gradient in the horizontal and vertical axis, position can be determined.

透过测量在水准和垂直的轴，位置里的电压梯度可能被确定。

Making sufficient researchs on mult-data combined problem for cm-order precision geoid, it presents and validates schemes of geoid determination, including precision estimation, outwork optimized designment, model algorithm and evaluation of result quality.

较为系统地研究了影响厘米级大地水准面精度指标的多种大地测量数据融合问题，提出并初步验证了以精度估算、外业工程优化设计、模型算法与成果质量评估为一体的高精度大地水准面精化方案。

Deflection of the vertical ; astro gravimetric leveling ; geoid ; CCD automatic astrometer ; method with single pole

垂线偏差；天文重力水准；大地水准面； CCD自动天体测量仪；单极坐标法

A precise measurement system of code-bar grade rod is designed and the method of collimation and measurement is researched.

构建了编码型水准尺的精密检测系统并对瞄准测量方法进行了研究。

Firstly, the new single and combined analytic error models of cumulative geoid height influenced by four error sources including the intersatellite range-rate of interferometric laser ranging system, orbital position and velocity of GPS receiver and nonconservative force of accelerometer from GRACE Follow-On satellites are established using the power spectrum principle, respectively.

第一，基于功率谱原理分别建立了新的GRACE Follow-On卫星激光干涉星间测量系统星间速度、GPS接收机轨道位置和轨道速度以及加速度计非保守力误差影响累计大地水准面的单独和联合解析误差模型。

Especially applies to our measurement of the MTR custody, under normal circumstances, at night, two-foot level, just a member of standing lamps near the equipment, we can satisfy the lighting conditions, and the measurement speed was quite fast.

特别适用于我们进行地铁监护测量，一般情况下，夜间，两把水准尺，只需一个照灯员站在仪器附近，就能满足光照条件，而且测量速度相当快。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。