station error
4.Using ANSYS as analysis tool, and the influence of river water fluctuating on geoelectric observation data in different distance from riverway to geoelectric monitoring observe station is numerically simulated, and the relationship between error of observation data and distance from riverway to the stations is summarized.
9.A large error of seed vitality was found by Bavarian ISTA (International Seed Testing Association)-Station in tes-ting a batch of Caragana arboresces seeds.
10.In order to adapt to the observational condition of magnetic declination and inclination with the high resolution and precision magnetograph,the azimuths among 7 measurement platforms and 4 azimuth marks in reconstructed Jinghai station,Seismological Bereau of Tianjing,are precisely measured by using classical astro?geodetic method,and 38 parameters with average error ±1.2″are gained. After the measurements, 7 sets of instrument can be used at same time in all?weather. ?

