本底

The background vibration of the zones near elevated railroad traffic of Shanghai is studied by this means.

并对上海市高架轨道线路附近区域的本底振动情况进行了研究。

To ensure consistency of the data between the two systems and reasonableness of their data, G-M tube detectors of the new system are calibrated and corrected to background, 20% system error was eliminated. After 18 months parallel operation and comparison, the relative error of monthly average reading is mostly less than 5%.

为了确保新旧监测系统数据的衔接与可比性，对新系统CP-110探测器进行了刻度校准和自身本底的补偿校正，纠正了约20%的系统误差；并对新旧系统进行了18个月的并列运行监测，其月均值的相对误差大多小于5%。

Results When select 1mol/L DTA in TISAB,the relative error of determination is smaller than 5.2%.Although the basis value is a little high,the filter is good absorbent of gaseity and aerosol fluoride.As for the pro-procedure,instead of dealing with supersonic for 15min in 40℃ stir in HCl for 1 hr.The average recovery of standard material is 93.9%.

结果 选用1mol/L柠檬酸钠作TISBA测定偏差＜5.2%；经浸渍处理的滤纸本底氟略有升高，但对气态或气溶胶态都能更好地阻留吸收；前处理方法可用酸浸搅拌成纸浆浸放1h代替40℃超声15min；用煤飞灰标准物质加标回收，平均回收率93.9％。

Data comparison shows a significant correlation between the TOR and surface ozone data collected at the GAW Lin 誥 n regional background station in the Yangtze Delta region, suggesting that the observational data have regional representativeness.

结果表明，长江三角洲地区对流层 O3柱含量的季节变化与该地区的临安区域大气本底站的地面 O3季节变化有着显著的相关关系，临安站的观测数据具有区域代表性。

Taking the fishery stocks status of no-overfishing in the coast of Guangdong in 1964～1965 as stock structure in good condition, according to the result of background survey of 16 artificial reefs area of Guangdong during 2002～2004, the historical change of stock structure of the coast of Guangdong had been studied, combined with some relative data, the species of enhancement for the artificial reefs area of Guangdong were put forward to choose: 38 species of fish, 13 species of shrimp, 4 species of lobster, 5 species of crab, 18 species of shellfish, 8 species of holothurian, 27 species of seaweed.

以1964～1965年广东沿海没有捕捞过度的渔业资源状况作为处于良好状态的资源结构，根据2002～2004年广东16个人工鱼礁区的渔业资源本底调查结果研究了广东沿海渔业资源结构的历史变动，结合有关资料，提出了广东人工鱼礁区可供选择的增殖放流种类为：鱼38种、虾13种、龙虾4种、蟹5种、贝18种、海参8种和海藻27种。

The optimal position of uniform section is calculated, and compared with the normal prism homogenizer. According to the theory that the beam energy refracted by the trapezoid prism is divided into 3 parts then overlapped in the base of the middle high energy, it realizes the use of association with the normal prism in two-dimensional.

实验中根据经梯形棱镜折射后光束能量在中间较强光束的本底基础上进行三分互补叠加的原理，实现了其与普通棱镜均匀器在二维方向上的组合使用；通过调节均匀器与接收屏之间的距离并同时记录每一位置处光束光斑的能量分布改善情况，确定了最佳均匀截面位置并与理论计算相吻合。

The results showed:(1) the activity concentration of 95Zr in water reduced quickly for subsidence, soil absorption, crucian intake, hornwort's absorption and adsorption.

结果表明：当952：经模拟降雨引入系统后，小麦不仅从根系而且还从茎叶吸收错，952：在小麦中的比活度，以茎叶和颖壳中最高，根部次之，籽粒中最低，仅稍高于本底水平。

The background value of concentration of the petroleum hydrocarbons in mollusc along the coast has been calculated.

在1990-07—1991-12期间，监测了黄渤海沿岸经济贝类体内的污染物残留量，计算了沿岸软体动物体内石油烃含量的本底值为3。

Effect of background constituents on the catalytic ozonation of nitrobenzene was investigated.

考察了水中本底成分对催化臭氧化分解水中微量硝基苯的影响规律。

The best result of hybridization is produced in nitrocellulose membranes.

进口硝酸纤维素膜的灵敏度最好，本底信号低。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。