径中的

The mathematical models of the delay of the GPS signal in the circumstance are put forward respectively. The computation of orbital arc of the two satellite constellations is based on two body problem and perturbations models. An algorithm based on the IRI model and thin layer model is used to simulate the ionospheric delay of the GPS signal. The error models of observation, multipath, relativity and antenna phase center bias are also researched. Under the consideration of the autocorrelation of the electronical measurements, the autoregressive model of time series is introduced into the noise models.

在信号仿真中，研究了利用二体运动和摄动法计算LEO卫星至GPS卫星星座的几何距离的问题；在信号的误差模型中，研究了电离层时延的IRI2001模型和单层投影模型；讨论了观测误差、多径效应、相对论效应和天线相位中心偏移的误差模型；结合电子测量噪声的具有自相关特性的经验，研究了观测误差的AR模型；结合实测数据分析，讨论了接收机钟差和卫星钟差的误差建模问题。

The processing route, technology and characteristics of the MTBE unit in Harbin Refinery are presented. The main operation factors, such as catalyst packing and performance, reaction temperature and pressure, and the effects of alcohol/alkene ratio on isobutylene conversion and MTBE quality, are discussed. The problems occurred during production and their solutions are also summarized.

介绍了哈尔滨炼油厂MTBE装置的工艺路线、新技术的应用及特点；催化剂的装填及应用情况；总结了生产过程中遇到的一系列问题及解决办法；探索了平稳生产的新徐径，以保证装置安全、平稳、长周期运行；同时对反应器操作温度、催化蒸馏塔操作压力、原料中醇烯比等因素对异丁烯转化率及MTBE产品的影响做了简单的总结。

And Changbai larch(Larix olgensis A.Henry)atdoubled CO2 concentration at seedling stage in growth-chamber and WI,HI of several dorminanttree species in MBKPF(1)Under 700μl·1-1 concentration of CO2,the stem height, stem diameter,main root length,root/shoot ratio and the relative proportions of biomass in root,stem and leaf of the seedlings ofKorean pine and Changbai larch had no significant change.

在700μL·L-1CO2条件下与正常浓度下相比较，在一个生长季后，红松、落叶松幼苗的苗高、地径、主根长、根茎比及生物量在根、茎、叶各器官中比例，差异不显著，对落叶松的侧枝数有影响；在第一、二次试验中，落叶松幼苗的平均每株生物量比在正常CO2浓度下大12.2％、14.2％，而红松幼苗的生物量分别减少3.9％、12.8％；红松、落叶松针叶叶绿素含量以及叶绿素a的相对含量在高浓度CO2下受到影响。

The results indicated that melon growth curve showed a S type. The size of fruit developed mainly in 3 weeks after flowering, and the weight of fruit happened in 2~4 weeks after flowering. The size of fruit depended significantly on cell number, the number of large-fruited Hanghemi was more than that of middle-fruited Yindi, and significantly more than that of small-fruited Yujinxiang.

结果表明，甜瓜果实体积和鲜质量增长曲线为&S&型，果径增长集中在花后3周内，果实鲜质量增长主要集中在花后2~4周；果实大小主要由细胞数目所决定，大果型品种'黄河蜜'的果实细胞数多于中果型品种'银帝'，显著多于小果型品种'玉金香'。

The results indicate that this system can effectively and automatically measure thread medium diameter,cone,thread pitch and pipe-thread shape so as to the problem of integrated measurement of petroleum pipe threads agilely.

结果表明，该系统可以高效自动地测量螺纹中径、锥度、螺距和管螺纹形状，可便捷地解决石油管螺纹的综合测量问题。

This paper sets up the model of the fruit impact crush, analyses the relations between the crush effect and the factors include the rotate speed of tool pan, the angle of arrival, the diameter of feed material and so on.

建立了水果冲击破碎模型，分析了冲击破碎中刀盘转速、撞击角度和给料粒径等因素对冲击破碎效果的影响和规律。

It is feasible to substitute the pitch diameter gauge and the ovality gauge for the thread work gauge.

用中径和椭圆度量规替代螺纹工作量规是可行的。

It was concluded that the optimized experiment conditions were coal particle size .074 mm, pulp density 10%, initial pH 2.5, cell inoculation amount 10%, microwave irradiation time 3 min, desulfurization cycle 4 d, temperature 30℃, rotation speed of rocking bed 160 r/min, the desulfurization rate of total sulfur reached 51.3%.

在煤样粒径为 200 目（＜0.074 mm）、煤浆浓度为 10％、初始 pH 为 2.5、菌体接种量为10%、微波辐照时间3 min、脱硫周期4 d、温度30℃、摇床转速为 160 r/min条件下，微波预处理和微生物联合作用对煤炭中全硫的脱除率可达51.3%。

The width of the posterior cutaneous nerve of thigh on the inferior margin of gluteus maximus was (4.4±0.8)mm,(3.4±0.7)mm between 1／3 superior and middle trunk,and(2.2±0.8)mm between 1／3 inferior and middle trunk,respectively.

其横径在臀大肌下缘、神经干的上中1／3交点及中下1／3交点分别为（4.4±0.8）mm、（3.4±0.7）mm、（2.2±0.8）mm。

The vertical large diameter round drying cycle using hot water heating for the oven drying design, quick heating and accurate temperature control and stability, operation in high-speed stability make OPP film for dry, will not offset contraction together.

直立式大倍径干燥轮使用热水循环加温进行烘干的乾燥箱设计，加热快控温稳定准确，操作中能使OPP胶膜稳定高速进行乾燥，不致偏移和收缩。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。