查询词典 km

The results showed that the sexual maturity of KM mouse was earlier than that of NIH and ICR,and ICR was the latest.The paranumber of deliveries per socket NIH was more than that of NIH and ICR,and NIH was the least.The milking of NIH and ICR was higher than KM.The average weight of firsbom mice of NIH was higher than that of KM and ICR.After ablactation the weight of NIH increased more fast than that of KM and ICR.

结果提示：KM性成熟比NIH和ICR小鼠迟，ICR小鼠最早；KM小鼠窝产仔数比NIH和ICR小鼠多，NIH小鼠窝产仔数量最少；NIH和ICR小鼠离乳率比KM小鼠高；NIH小鼠初生仔鼠平均体重比KM及ICR小鼠重，离乳后NIH小鼠体重增长比KM及ICR小鼠快。

Analysis of dynamical simulation data shows as follows: Wheel tread LMA is able to satisfy the requirements of the 300 km/h~350 km/h high-speed wheel-rail technology, and wheel tread XP55 is able to reach 250 km/h~300 km/h; the main issue of Wheel tread LM is that the larger equivalent conicity may cause the bigger lateral wheel-rail force, and wheel tread S1002 has the severe problem of harmful wheel-rail wear.

动态仿真数据分析表明：LMA型车轮踏面可以满足300 km/h~350 km/h高速轮轨技术要求，而XP55型踏面则可以满足250 km/h~300 km/h速度的要求；LM型踏面的主要问题是等效锥度比较大，从而造成轮轨横向力也比较大，S1002型踏面对轮轨存在比较严重的有害磨耗问题。

Based analysis above, we chose the spatial resolution of 1°×1°in the horizontal direction and 5~30 km in depth. Using the pseudobending method to calculate the ray traveling path and residual of travel time; LSQR method to inverse, we got the final 3-D P wave velocity structure in this area.

根据上述分析，以水平方向1°×1°，垂直方向以5 km、15 km、30 km为间隔划分网格，并建立初始速度模型，采用伪弯曲射线追踪方法计算走时和射线路径，通过基于LSQR算法的反演重建了研究区域40 km以下、480 km以上的三维P波速度结构。

The differential exhumation caused by the NNE-trending faults probably continued all the way from the 180℃isothermal surface, through 110℃isothermal surface to the 70℃isothermal surface. At 90Ma, Dabie orogen"s average height of topography, compared with the current sea level, reached 1.45 km (when geothermal gradient is chosen as 25℃/km) or 1.75 km (when geothermal gradient is chosen as 20℃/km), which is 4(when geothermal gradient is chosen as 25℃/km) or 5(when geothermal gradient is chosen as 20℃/km) times of the height of today"s surface topography in simulated region.

这种由于NNE向断裂系引发的差异推隆剥露，可能从等温面180℃锆石(U-Th／He的封闭温度、经过110℃(磷灰石裂变径迹的退火温度)一直延续到70℃等温面磷灰石(U-Th／He的封闭温度大别造山带90Ma时与现今海平面相比地形平均高度可达1.45km(地温梯度取25℃／km时)或1.75km(地温梯度取20℃／km时)，是现今模拟区域地形平均高度的4倍(地温梯度取25℃／km时)或5倍(地温梯度取20℃／km时)。

In this paper, those teleseismic records with clear P waveforms are chosen to carry out receiver function analysis and modeling. A simple crustal structure model beneath the station is obtained, in which the Moho depth is 28 km. On the top of the upper crust is a 2 kmthick low velocity layer with a shear wave velocity of only 23 km/s. The shear wave velocity increases gradually with depth to 38 km/s in the lower crust.

本文对具有清晰P波波形的远震记录进行了接收函数处理和计算模拟，得到台站下简单的地壳结构模型，其莫霍面深度为28 km，上地壳顶部有一层2 km厚的低速层，横波速度只有23 km/s，向下逐渐过渡到横波速度为38 km/s的下地壳。

The results showed that the differences of spatial changes between cultivated land and population in Shaanxi Province are significant. However, the change distribution pattern is basically identical. There is little relative change in southern Shaanxi, while it is volatile in northern Shaanxi and central Shaanxi plain. The cultivated land gravity moves 11. 67 km to northeast during the past 52 years, and the population gravity moves 17.35 km to northeast. The whole trends of them are alike and the distance between two canters of gravity pushes 6.29 km close.

结果显示，陕西省耕地和人口各自空间变化区域差异显著，但变化分布格局大致相同，陕南地区相对变化较小，陕北地区和关中地区中部部分区域相对变化较大。52年来耕地分布重心向东北方向移动11.67 km，人口分布重心向东北方向移动17.35 km，两者整体走势相似，两重心之间的距离推近了6.29 km。

At the same time ,the cap of filter paper was used for improving transformation ratio. Leaf discs were transferred onto the media MS+ NAA(1mg/L)+6-BA(3mg/L)+Km(30mg/L)for regeneration resistant selction. Shoots from selection medium were cultured on medium MS +NAA(1mg/L)+6-BA(3mg/L)+Km(50mg/L) for selection again,and then on the media 1/2MS+NAA(0.2mg/L)+IBA(0.2mg/L)+Km(25mg/L)for rooting selectin.

共培养后把叶盘转入MS+ NAA(1mg/L)+6-BA(3mg/L)+Km(30mg/L)培养基上进行分化筛选培养。30天后可分化出不定芽，把不定芽转到MS +NAA(1mg/L)+6-BA(3mg/L)+Km(50mg/L)培养基上进行抗性芽的筛选，转到1/2MS+NAA(0.2mg/L)+IBA(0.2mg/L)+Km(25mg/L)培养基上进行生根筛选。

They are:①completed total 8 000 km long natural seismic profiles cross the northern boundary and central part of the plateau, identified several deep-cut lithospheric faults and low velocity and low density bodies under the central part of the plateau related to Cenozoic volcanic eruption, the Tarim block subducted beneath the Altun Mts;②found the evidence that the Altyn Tagh fault formed in 220～240 Ma and at least 400 km sinistral offset since, and determined quantitatively deformation in Cenozoic;③discovered 350 km long high-ultrahigh pressure metamorphic belt in the south border of the Qilian terrane,which brobably represented the Early Paleozoic boundary between the North China and Yangtze plates;④according to new discoveries of caledonian ophiolite,granite are subducted complex established paleo-collision orogenic framework of northern Qinghai-Tibet plateau;⑤proposed a new model .

本文展示了中法1995～2000年青藏高原北部地学研究的如下主要新进展：①完成8 000 km长的青藏高原北部及中部天然地震岩石圈探测剖面，确定若干条岩石圈断裂，发现与新生代火山喷发有关的青藏高原中部深处的低速、低密度体，塔里木地块俯冲于阿尔金山之下；②提出阿尔金断裂形成于220～240 Ma和左行平移400 km的科学依据及确定其新生代变形量；③确定祁连南缘350 km长的高压-超高压变质带，提出其可能代表早古生代时期北中国板块与扬子板块之间西部界限的新认识；④根据加里东期蛇绿岩、花岗岩及俯冲杂岩带的新发现，初步建立了古碰撞造山格架；⑤提出高原隆升的&地幔底辟和内向陆内俯冲&的新假设。

According to the 137Cs concentration distribution along a typical profile A-1, the sediment accumulation rate and the natural surface soil erosion rate are respectively 16.6t/km^2a and 45.95t/km^2a, which shows that about 63.88% of the eroded surface soil is removed by way of underground loss. The relative contribution ratio of surface soil loss and underground soil loss are respectively 70.13% and 29.87%. By comparison to the utmost soil formation rate 13.51t/km^2a in Maolan, the risk of soil erosion in the Engineering Monument grass-covered depression is higher.

2根据草地洼地典型堆积农耕地土壤剖面A-1的137Cs浓度分布特征，1963年以来的流域平均堆积泥沙数量是16.6t/km^2a，流域平均土壤侵蚀速率为45.95t/km^2a，约占侵蚀产沙数量63.88%的泥沙以地下流失的形式散失；(3)草地洼地小流域内地面土壤流失与地下土壤流失的相对贡献率分别是70.13%和29.87%；(4)以茂兰地区最大成土速率为依据推算出的允许土壤侵蚀量是13.51t/km^2a，草地洼地的土壤侵蚀危险程度极高。

The thermal gradients of the depression decreased during the Cenozoic time. However, it decreased quickly in Eogene, but only changed a little during the Neogene period The thermal gradient was 540～500℃/km during the period of the Kongdian group deposition, 500～400℃/km during the period of Shahejie group, 400～385℃/km of Dongying group and 385～355℃/km during the Neogene.

研究结果表明，济阳坳陷新生代以来的古地温梯度是逐渐降低的，但在早第三纪时期下降的幅度较大，而在晚第三纪－第四纪则下降的幅度明显较小；济阳坳陷在孔店组沉积时期的地温梯度为540～500℃/km之间，沙河街沉积时期为500～400℃/km，东营组沉积时期为400～385℃/km，晚第三纪时期为385～355℃/km，第四纪以来基本未变。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。