更差的

In conclusion, the results of multilevel model analysis showed that the GERD score of resident in Wuhan was relatively higher and had significant difference with that in Guangzhou, however, that in Shanghai, Beijing and Xi\'an had no significant difference compared with that in Guangzhou. That is to say, the prevalence of GERD in Wuhan was relatively higher compared with the other four survey sites; the residents'health status more worse, the GERD score more higher, and the influence of health status on GERD score was also effected by the region difference between Wuhan and Guangzhou; residents lived in rural region with lower education level, worse spirit status were more likely to suffer from GERD; Moreover, those residents who had family history of GI tumors or other GI diseases, some anamneses (such as dyspepsia, gastritis, rheumatic arthritis), and some diseases (such as irritable bowel syndrome and aerophagia) were also more likely to report GERD. However, no significant association was found between GERD and some other factors in this survey, such as sex, age, etc.

总之，多水平模型分析结果显示，与广州相比，上海、北京和西安居民的GERD总评分没有明显的差异，而武汉居民的GERD总评分则相对较高，即表示武汉的GERD发病率在5个调查城市中相对较高；居民的总体健康状况越差，其GERD总评分越高，且其对GERD总评分的影响受到武汉与广州之间地域差异的影响；农村居民、文化程度越低、精神状况越差者更容易患GERD；另外，那些有胃肠道疾病或肿瘤家族史，既往患有胃炎、消化不良、风湿性关节炎，现患有肠易激综合征、吞气症的人，患GERD的可能性更大，而性别、年龄等因素，本研究未发现其与GERD有显著的关系。

We are full of vavuum pump of revolutionary 4RB compression ring to be able to arise be as high as 1, of 000mbar press difference---Far outclass is other any baric type compressor, end at present, the 4RB volume that the other system that can produce this to approach poor range wants to compare us is huger, noise is louder, and easy attaint.

咱们有钱人造反性的4RB气环真空泵能型成高达1，000mbar的压差---远远高于另外任何的气压式缩小机，截至当前，能型成此压差领域的另外体系要比咱们的4RB容积更巨大，噪声更加高，并且易于损伤。

This makes more and more people pay more attention to studies and applications of numerical simulation in thermal recovery. In this research, we have developed a reliable mathematical model for thermal recovery, which takes a full consideration of the effect of viscos, gravitical and capillary forces on the three-phase flow of gas, water and oil, the effect of the temperature on the medium characteristics of liquid and solid, the phase equilibrium of gas-liquid in each component, heat transportation including connection, conduction and radiation as well as heat losses in both the overburn and underlying strata. In the space discreation of the mathematical model, we have proposed a new method based on the improvement of the conventional nine-points difference approximation, which has a higher difference accurancy.

本项研究以热力采油的主要机理为基础，充分考虑在粘性力、重力和毛管力作用下油水气三相流动，考虑温度对各种流体和固体介质物性的影响，考虑每一组分中汽液两相的相平衡，考虑热在地层中的传导、对流和辐射以及上下盖层的热损失，利用热力学第一定律、质量守恒定律和流体迁移定律，建立了正确可靠的注蒸汽数学模型；在对数学模型进行空间离散时，利用控制有限体积积分法，对以往的九点差分近似作了合理的改进，使其具有较高的差分近似精度：结果表明，该公式的近似精度要比以往文献中所给的九点差分近似精度高，可以认为，在油藏数值模拟中，如果遇到非均质情况，使用这种九点差分近似更合理。

By using Zernike polynomials to describe the wavefront distortion of beams, the propagation properties of the flattened Gaussian beams, super Gaussian beams, Gaussian beams and plane waves passing through an aberrated lens or an aberrated annular lens are studied based on the generalized Huygens-Fresnel diffraction integral.

以广义惠更斯—菲涅尔衍射理论为基础，采用Zernike多项式描述像差光束畸变波前相位，研究了平顶高斯光束、超高斯光束、高斯光束以及平面波通过像差透镜和环状像差透镜的传输。

Predictive lossless coding chooses and applies one of multiple available differential pulse-code modulation modes to individual macro-blocks to produce DPCM residuals having a closer to optimal distribution for run-length, Golomb Rice RLGR entropy encoding.

预测无损编码选择多种可用差分脉冲码调制模式之一并将其应用于每个独立宏块，以产生具有更接近于游程长度Golomb Rice RLGR熵编码的最优分布的DPCM残差。

In chapterⅡ, considering GLMMs data which the number of high units is different and the number of low units is small and unbalanced, we Conduct a series of simulations, the simulations show that regardless of the number of the level 2 units,the Bayesian estimate of random effects residual variance is more precise than PQL and the PQL estimation deviates from the true value seriously; In terms of the fixed effects estimates, When the number of level 2 units is 20, The mean and median of the Bayesian estimate is more precise than PQL,But With the number of level 2 units increase,the estimate of two methods is similar. Thus, in practical applications, we recommend the use of Bayesian method.

第二章针对不同高水平单位数，低水平数较小且不平衡的GLMMs数据，进行模拟研究，研究表明：无论水平2单位数的大小，贝叶斯方法随机效应残差方差估计值远比PQL法更接近真实值，PQL法严重偏离了真实值；而对固定效应参数估计值，当水平2单位数为20时，贝叶斯法各参数的均数和中位数均要较PQL法更接近真实值，而随着水平2单位数的增加，两种方法在估计固定效应参数时相差并不大，因而，在实际应用中，推荐采用贝叶斯法。

Effects of dry temperature and dry time on properties of heat cured sand and the relationship with binder composition are as follows:sands bonded by binders that are not modified have high strength when dry temperature is high and dry time is long,but their anti-wettability power is poor . Sands bonded by binders that are modified by B but not modified by M can be dried quickly and sand strength is high but anti-wettability power is also poor. Sands bonded by binders that are modified by M but not modified by B can also be dried quickly to obtain maximum strength,then the strength becomes lower when they are dried continually for more time. and sand strength is high but anti-wettability power is also poor. Sands bonded by binders that are modified by M as well as by B at the same time can be dried quickly to obtain maximum strength at low temperature and short time. But the anti-wettability of sand mold is best when they are dried at high temperature and long time.

烘干温度和烘干时间对热硬砂性能的影响及其与粘结剂改性的关系是：未经改性剂B和改性剂M改性的粘结剂砂，脱水速度较慢，烘干温度越高，时间越长，则硬化强度也越高，但未经改性的粘结剂热硬砂的抗吸湿性较差；经改性剂B而不经改性剂M改性的粘结剂热硬砂，烘干硬化速度较快，强度也高，但在高湿度下的抗吸湿性不好；经改性剂M改性而不经改性剂B改性的粘结剂热硬砂，烘干时强度先随烘干时间升高至最大值后，继续烘干时强度又出现下降；经改性剂B和经改性剂M共同改性的粘结剂热硬砂能在短时间和较低的烘干温度下就可烘干到最高强度，即烘干脱水的速度较快，但试样的抗吸湿性差，若在更高温度和更长时间下烘干，试样的抗吸湿性得到改善，综合考虑烘干强度和抗吸湿性要求，对于φ30×30mm试样，理想的烘干温度是200℃，烘干时间20分钟。

The gun was a good time, after sitting a little bigger, a powerful and easy operation, suitable for all kinds of maps environment M16:The gun power, after sitting a little high, and be convenient operation, but more is still poor and m4a1 some ; AK-47:The gun after sitting too large, the most powerful, it is difficult to operate, but to all kinds of maps of the environment is a very good of the gun ; AK－74:Power of the gun, fire is quickly, then take a great improvement of the 74 than 47 more easy to operate FAMAS:The power of a gun, fire, take off after a person closer to the king G36K:The power of a gun, fire is quickly, then sat a small operation is very easy overhand SG552:The gun power, and sat down and large, but the fire, is a good fast screen, sniper rifles AUG:The gun power, after sitting a little fire, and is sure of the higher is the world famous one of the sniper rifle ; AWM:The gun after a powerful, by too big, fast and slow to be very high, who is a widespread use of the sniper rifle ; M700:The gun power larger and smaller, a relatively rapid speed and must have very high, use less M60:The gun power, and sat down and large, the fire, is not high, is a suppressed fire MP5:The gun after power, by a fire made, and must have a high, is a very good lead to a submachine gun ; MP7:The gun after power, and sat down, fire is quickly, he is too poor to cooperate with the team to use

此枪精准高，后坐较小，威力较大，容易操作，适合各种地图环境使用； M16：此枪威力较大，后坐较小，精准较高，方便操作，但是和M4A1比较还是差了点； AK-47：此枪后坐太大，威力更大，难以操作，但是适应各种地图环境是一把十分不错的高杀伤力枪； AK－74：此枪威力较大，射速较快，后坐比较大，改进后的74比47更容易操作； FAMAS：此枪威力较小，射速飞快，后坐较大，人称近距离步枪之王； G36K：此枪威力较小，射速较快，后坐很小，操作非常方便容易上手； SG552：此枪威力较大，后坐也大，但是射速很，是一把不错的快掩护型狙击步枪； AUG：此枪威力较大，后坐较小，射速一般，精准较高，是世界有名的狙击步枪之一； AWM：此枪威力巨大，后坐太大，射速较慢，精准很高，谁一把广泛使用的狙击步枪； M700：此枪威力较大，后作较小，射速较快，精准很高，一般使用人少； M60：此枪威力较大，后坐也大，射速一般，精准不高，是一把压制火力的重机枪 MP5：此枪威力一般，后坐较小，射速飞快，精准较高，是一把非常不错的冲锋与反冲锋枪； MP7：此枪威力一般，后坐较大，射速极快，精准太差，主要适合团队配合才可以使用

Ten years ago we had more guys, but the equipment was bad,' says one veteran smokejumper.'Now we have fewer guys, and the equipment is still bad!'

十年前，我们有更多人手，但设备很差，&一位经验丰富的空降灭火员说，&现在我们人手少了，但设备仍旧很差！

Its printing speed of merchandizes high performance under normal type are highly manoeuvrable 2 million four-colour/off both sides using dualcolor/monochrome, commercial business, half-eight type speed as much as 3.5 million ~ 5 million above the park off color.

其印速矮外示在凡是书刊胶轮的最矮时速达2不一差开双背四色／双色／单色帖，贸易、半贸易八色胶轮时速更矮达3.5不一~5不一以上差开色令。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。