研究出

Astrometry with new technologies created and is dedicated to the Space Telescope astrometric space orbit around the Earth observation and research on the scientific .1989 8 8, the European Space Agency launch astrometric Satellite Iba Valley satellite, which contains a 29 cm diameter reflecting telescope, four ground stations for data reception and analysis with the aim of space-based observations compiled by 120,000 to contain space for satellite measurement of star form, the location accuracy of ± 0002, parallax measurement accuracy ± 0002, on their own a year 0002, CDCDCD preliminary estimate of the above three data are now actual for the 0004,0003 and 0005; CDCDCD190 year in April the U.S. launch of the Hubble Space Telescope, containing 24 m diameter Wang C far mirror can work 15-20 years, 17-18 so you can measure the parallax of stars, are hundreds of thousands of stars of the measurement results.

伴随天体测量新技术而产生，是专门用于天体测量的空间望远镜在围绕地球的空间轨道上进行观测研究的科学。1989年8月8日，欧洲空间局发射天体测量卫星伊巴谷号卫星，它载有口径29厘米反射望远镜，4个地面观测站进行资料接收与分析，目的是要通过空间观测编出含星12万颗的空间测量星表，位置精度为±0002，测量视差的精度为±0002，自行为每年0002，CDCDCD现在初步估计上述三个数据实际为0004、0003和0005；CDCDCD190年4月美国发射哈勃空间望远镜，载有口径24米的望C远镜，可工作15—20年，可以测量出17—18等星的视差，得到几十万颗星的测量结果。

The paper has its background and meanings. First,to reflet beijings residence situation. Second, to analyze purchasing power of the resident population, third, to tell the authorities and developer what kind of residence the potential customer really want.

首先论述了本文写作的背景和意义：1、描述出北京居民的居住现状；2、通过对居民家庭可支配收入的分析，并结合住房面积和价格水平，分析居民的购买力；3、为开发商和投资商描述出北京居民的住宅真实需求，是做投资可行性研究的重要依据和参考。

How to give out the friction factor and the regular pattern is the importance of researching the prestressed loss in the long steel rope.

如何合理地给出摩阻损失系数或找出其变化规律，成为长索预应力损失估计的研究重点。

Our two studies have compared the frequency of OBEs in the two types of lucid dream, and surveyed the relative frequency of OBEs and dream-related events in a large number of people.

我们的两项研究，已经比较了在两种类型的自觉梦境中，灵体出离发生的频率。并且在一个大的人群中调查了灵体出离的相关频率以及梦境相关行为。

The class of distribution of decreasing variance residual life an that of decreasing percentile residual life are investigated,some their characters are also given,and their characteristic result is given when the general moments of residual life function are taken as their basis.

阐述了递减方差剩余寿命分布与平衡分布的平均剩余寿命函数的密切联系；研究了递减方差剩余寿命分布类及递减百分位数剩余寿命分布类，并且给出了它们的一些特征；给出了以剩余寿命函数的一般矩为基础的特征结果。

The process of preparing manganese from rhodochrosite by acid—leaching is studied and the optimum leaching condition is obtained.

对菱锰矿的硫酸浸出工艺条件进行了研究，得出了最优浸出工艺条件。

In chapter 2 we recall the basic facts about Riemannian manifold and some notions of the transform theory on Riemannian manifolds.

首先，利用给定流形的向量丛上联络的存在性给出流形上的不可积分布上非完整联络的存在性证明，进而证明了次黎曼联络的存在唯一性，并以此为出发点研究了次黎曼流形中仿射变换、等距变换、共形变换和射影变换下的一些不变性质，给出了相应变换下的一些不变量。

By this way, the extend and degree of the masses were illustrated intuitionally and it was made out that the main destroying form was toppling rockfall .

在分析砂、泥岩特性的基础上，通过离散元数值分析，研究了万县长江库岸危岩在不同工况下的稳定性，直观地揭示出危岩在不同工况下的破坏程度，得出危岩的主要破坏形式为倾倒式崩塌，并总结出危岩的大规模破坏发生在蓄水回水期，为三峡危岩治理的对策及时间提供了有价值的参考。

The effects of operation parameters on separation of fatty acid methyl ester from rapeseed oil deodorizer distillate by molecular distillation were investigated for further utilization of RODD. The results indicated that the recovery of FAME was 41 g/(100 mL) when pressure was 5.2 Pa, evaporating temperature was 120℃, feed temperature was 70℃, wiper rolling speed was 150 r/min, feed rate was 120 mL/h. The biodiesel was analyzed by GC-TOFMS.

为了实现脱臭馏出物的清洁加工，运用分子蒸馏技术分离菜籽油脱臭馏出物中合成的生物柴油，考察了分子蒸馏的操作参数对生物柴油回收率的影响，研究结果表明：当系统压力为5.3 Pa，蒸发面温度120℃，进料温度70℃，刮膜转速150 r/min，进料速率120 mL/h时，生物柴油回收率达到41 g/100 mL。

The effects of operation parameters on separation of fatty acid methyl ester from rapeseed oil deodorizer distillate by molecular distillation were investigated for further utilization of RODD.

为了实现脱臭馏出物的清洁加工，运用分子蒸馏技术分离菜籽油脱臭馏出物中合成的生物柴油，考察了分子蒸馏的操作参数对生物柴油回收率的影响，研究结果表明：当系统压力为5.3 Pa，蒸发面温度120℃，进料温度70℃，刮膜转速150 r/m in，进料速率120 mL/h时，生物柴油回收率达到41 g/100 mL。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。