查询词典 divided difference

Thereinto, drip irrigation is divided into three treatments of different ration. Tectorial and untectorial treatment are adopted to semifixation spray irrigation. At the same time, seepage-preventing trial is done. By study of one growth season, it shows that the indexes, Comparing with flood irrigation, water-saving technique has the effect of increasing production and harvest, economizing water, energy sources and field, saving work, time and power. It has best significance difference among unit yield of using different irrigation ways. The highest yield is in irrigation treatment of 80% field moisture capacity, it is secondary in seepage-preventing ditch irrigation treatment and is the lowest in spray irrigation treatment. Drip irrigation increase yield 4.0%~25.9%,Seepage-preventing ditch irrigation increase yield 17.5%, and spray irrigation decrease yield 22.4～37.8% comparing with flood irrigation. The effect to yield is obvious in drip irrigation treatment of different irrigation ration.

不同灌溉方式间单位产量存在显著差异，80％田间持水量灌溉处理产量最高，防渗渠畦灌次之，喷灌的产量最低；与土渠漫灌单位产量相比，滴灌增产4.0％～25.9％；防渗渠畦灌增产17.5％；喷灌产量下降22.4％～37.8％；滴灌试验中不同灌溉处理对产量的影响显著，随着灌溉定额的减少，产量随之下降，主要原因是60％田间持水量的灌溉处理限制了棉株的生长发育，降低了产量；不同灌溉方式的灌溉定额与绿洲内土渠漫灌平均灌溉定额相比，滴灌节水47.7％～54.4％，防渗渠畦灌节水38.56％，喷灌节水58.2％；滴灌、喷灌及防渗渠畦灌与土渠漫灌相比分别省工16.2％、25.1％和3.6％；滴灌和喷灌较防渗渠畦和土渠漫灌节地约5％～7％；从净收益来看，防渗渠畦灌较土渠漫灌经济效益提高了34.2％，滴灌提高了9.8％～48.2％，喷灌则下降了23.8％和44.7％；而且采用不同灌溉方式种植棉花，对于成铃率、衣指、衣分、纤维长度、产量等指标，滴灌要优于喷灌和防渗渠畦灌；而成铃数、种子数、铃重、籽指等指标，滴灌、喷灌均小于防渗渠畦灌。

According the difference of plant community in Daqinggou Nature Reserve, the environment was divided into 7 kinds of habitats, they are Fraxinus mandshurica plant community, Quercus mongolicus plant community, Ulmus macrocarpa plant community, conifer community, lakefront plant community, paddy field plant community and grassplot plant community in sandlot.

按照植物群落的不同将保护区内的环境划分为7种生境，分别为水曲柳植物群落、蒙古栎植物群落、大果榆植物群落、针叶林植物群落、湖边湿地植物群落、稻田植物群落和沙丘草地植物群落。

Analyzing the model, especially the activity of Taihang Mountain piedmont fault, we got such main conclusion:1. Based on sequence stratigraphy, the strata is divided from the selected drills. And the Quaternary stratigraphic framework of Handan city is established, dividing the Quaternary strata into four parts- Qh, Qp3O , Qp2Y and Qp1G.2. With all the selected drill data of Handan city, a drill database is established. A quaternary strata 3D model of Handan city is imitated by GOCAD and ArcGIS, and so are the bottom structural map of each horizon.3. Analyzing the 3D model and the contradistinction section of drills, we got: the stratum of Qh and Qp3 is smooth and flat, with a feature of a higher west, little difference between south and north and undistinctness of faults; there are several depocenters along S-N and N-W in the stratum of Qp2, and the evolution of the stratum is controlled by a couple of ruptures, which means the tectonic movement is active in this period of time.4. Since quaternary, main tectonic movements happened in Qp2 and have been stable in Qp3 and Qh.

获得主要结论如下：1、利用层序地层学的方法将收集的邯郸市钻孔以及论文所依托项目野外施工的钻孔进行了具体的地层划分与对比，建立了邯郸市第四系等时地层格架，将邯郸市第四系划分为全新统、更新统上部欧庄组(Qp3O)、更新统中部杨柳青组(Qp2Y)和更新统下部固安组(Qp1G)。2、利用收集到的邯郸市水文、工勘钻孔以及所依托项目初勘和详勘两个阶段野外施工的钻孔数据，建立钻孔数据库，通过使用三维建模软件GOCAD和地理信息系统软件ArcGIS等进行模拟，得到邯郸市市区部分第四系地层三维可视化模型，并获得各个地层的底部构造图；3、通过对所天生模型和钻孔廊带对比剖面的分析，可以得到：全新世和更新世晚期(Qp3)时期地形整体较平缓，整体上显示西高东低、南北差异不大的格式，断裂显示不明显；更新世中期(Qp2)时期沿南北向和北西向存在几个沉积中心，地层发育受几条断裂的控制，反映了研究区的构造活动在更新世中期较为活跃；4、邯郸市自第四系以来，主要构造运动均发生于更新世中期，到更新世晚期及全新世时期逐渐趋于稳定，进而使更新统上部和全新统地层沉积均一且完好。

Dry-type valves use air pressure and water pressure acting on both sides of the flap valve torque difference control valve on the valve closed and open, generally can be divided into differential-type dry-type alarm valve and sealed dry-type alarm Flanged end gate valve valve two kinds of.

干式阀利用两侧气压和水压作用在阀瓣上的力矩差控制阀瓣的封闭和开启，一般可分为差动型干式报警阀和封闭型干式报警阀两种。

Dry-type valves use air pressure and water pressure acting on both sides of the flap valve torque difference control valve on the valve closed and open, generally can be divided into differential-type dry-type alarm valve and sealed dry-type alarm 800X Differential By-Pass Balancing Valve valve two kinds of.

干式阀利用两侧气压和水压作用在阀瓣上的力矩差控制阀瓣的封闭和开启，一般可分为差动型干式报警阀和封闭型干式报警阀两种。

After the early spring, sprouts the scale bud, the different variety peony's scale bud shape is different, is divided the circular, the egg circular, the long oval, the long oval, the color also respectively has the difference.

中国牡丹绝大多数品种属二回羽状复叶，但也有少数品种为一回羽状复叶。叶型有大、中、小长叶；大、中、小圆叶之分。

modulation is the transmission of information to be loaded onto a high-frequency signal in the process.amplitude modulation using signal to control the rate of carrier,with its linear modulation signal changes,and maintain the same carrier frequency.in the amplitude modulation,in accordance with the strength of signals in the spectrum of different components,it is divided into ordinary am (amplitude modulation standard am),with inhibition of bilateral carrier am,the carrier single sideband suppression am.the main difference is the different methods and structure of the spectrum.

摘 要：调制是将要传送的信息装载到某一高频信号上去的过程。振幅调制是用调制信号去控制载波的幅度，使其随调制信号线性变化，而保持载波的频率不变。在幅度调制中，根据已调信号的频谱分量不同，分为普通调幅、抑制载波的双边带调幅、抑制载波的单边带调幅。它们的主要区别是产生的方法和频谱结构不同。

The paper has studied the characteristic and reason for flood in cities in tidal river area, and then has summed up the assignments faced with and existent problems in the area. Considering the question of flood prevention of cities in terms of the characteristic of water system and difference drainage basin surface, the area is divided in to coteau and campagna.

根据下垫面的不同及水系特点，将研究区域分成山区和平原区，平原区再细分为水面、水田、旱地、城镇四类，分别采用不同的产汇流方法进行计算，再运用河网非恒定流方法计算河道断面洪水要素。

The seed embryoes were penetrated by 〓 ion beams of 75 MeV/u and the seed endosperms were implanted by the proper degraded 〓 ions, and soluble protein of the seedling in M1 generation was divided into 5 sections to analyze their changes at different molecular weight. 1 In comparison with control, the relative content of the second section (molecular weight is heavier in all sections) of all irradiated materials got down, while the relative content of the fifth section (molecular weight is the lightest) of those went up. 2 The penetrating seeds made the relative content of the first section (molecular weight is the heaviest) and the third section (mid-molecular weight) drop, while the fourth section went up. Moreover, the changes of the third section and the fourth section of the penetrated materials were clearly different from those of the implanted materials. 3 The difference between implanted embryo and implanted endosperm existed in deeper dropping of the first section and higher rising of the fifth section on relative content of soluble protein of the latter. 4 On irradiated materials at lower doses, there were exceptional changes of soluble protein, it may be thought that there was excited effect of low dose.

1.75MeV／u 〓O〓离子经过适当降能后注入小麦种子的不同部位和贯穿整个种子，对其M1代幼苗的可溶性蛋白质组分以及电泳中不同区段蛋白质组分相对含量加以分析，结果表明：1）同对照相比，随着辐照剂量的增加，所有辐照材料第二区段蛋白质组分的相对含量下降；而第五区段蛋白质组分的相对含量升高。2）种子的贯穿处理，同时也引起第一区段和第三区段蛋白质组分相对含量的下降以及第四区段的升高；其中第三、四区段的变化明显区别于注入效应。3）注入胚和胚乳的区别在于后者第一区段蛋白质组分相对含量的较大下降和第五区段的较大提高。4）小剂量辐照的材料，可溶性蛋白质组分的变化异常，可能与低剂量辐射兴奋效应有关。

The results showed that there are two main fastigiums in death curve during the hatching penod, one is in 4-6 day and another is in 17-19 day. The rest embryo ages were divided into three phases by the two pinnacles and the difference of died embryo among three phases is not significant. The results in this paper is not incompletely consistent with commonly experience value.

结果表明，整个孵化期间，胚胎死亡主要有2个高峰，第1个高峰在孵化前期的4~6日龄，第2高峰期在孵化后期的17~19日龄，这2个胚胎死亡高峰期把剩下的各胚龄分为3个阶段：1~3日龄、7~16日龄、20~21日龄，这3个阶段的胚胎死亡皆差异不显著，本研究结果与一般经验值不完全一致。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。