查询词典 timescale

One feature of this synchronizer was to be able to type the timescale of synchronous signals and choose the time of typing when all the insruments were in...

它的主要特点之一就是在多台测试仪器都处在正常的工作状态中打出同步信号的时标。并且可以任意选择打标的时间。

On decadal timescale, the highest and second highest values of Ca〓 and Mg〓 occurred in 550's and 380's respectively, which are related to cold and arid climatic conditions.

在十年尺度上，Ca和Mg离子的最高值和次高值分别出现于550's和380's，它们均与冷干气候相联系。

The results also show that there is a close relationship between the Nonlinear Dynamic Heating and the amplitude and skewness of ENSO on the decadal timescale.

本文首先对LICOM模式模拟ENSO循环及其年代际调制现象的能力进行了评估，结果表明模式对于ENSO的年际以及年代际尺度上的变化具备基本的模拟能力。

In order to apply neural network and intelligent control in supermaneuverable flight, the mathematic model of flighter is obtained, and the nonlinear aerodynamic coefficients are identified using computational neural networks, then, a neural network control system for supermaneuver is designed according to the timescale, and a intelligent compensator is givento compensate for the system errors which are caused by the networks training error, no-samples input, disturbance and time-delay, etc, which including the design of knowledge base, blackboard and reasoning engneer, the simulation results of Herbst maneuver demonstrate the designed control system is satisfying.

为了在超机动中应用神经网络和智能控制，本文接着建立了超机动时飞机的数学模型，并利用神经网络对大迎角下非线性非定常气动力进行了辨识建模，然后按时标分离法设计了一个针对超机动飞行的神经网络控制系统。

An accurate timescale derived from benthic foraminiferal δ^18O is crucial to paleoceanographic studies. In global oceans, there are few continuous δ^18O records for the benthic foraminifers which span the past 5 Ma and have time resolution better than 5 ka.

基于底栖有孔虫δ^18O的精确的年代标尺是古海洋学研究的基础，特别是长度超过5Ma，分辨率小于5ka的连续δ^18O记录在全球大洋深海记录中更是凤毛麟角。

The choice where complex conditional testing is required is between reliable fast code and unreadable and unfixable code, most eventually take the choice of doing this type of testing in a reliable and fast manner so that the difficult work in terms of speed and capacity can be done in a reasonably timescale.

复杂的条件测试可以用两种形式的代码构造：可信、快速的代码，不易读、不易修改的代码；大多数人最终选择了第一种方式，这是的那些困难的工作在可以接受的时间尺度内完成。

According to the energy conservation theory, BOM and CSIM4 were coupled. The BOM has no treatment on transmission solar radiation, which is of great importance when the model is adapted to Arctic Ocean. So the treatment was introduced to BOM. Through numerical test on different lead albedos, it was found that sea ice thickness is not so sensitive to lead albedo, which may be contribute to the lead occupies little ratio within multiyear sea ice pack. The reason of summer over-melt of arctic sea ice is the NCEP reanalysis downward solar radiation being larger than its reality. Then the arctic sea ice climate variability was simulated. Results showed that: simulated ice thickness change is in accord with the submarine investigated mean sea-ice draft changes. Simulated annually maximum ice thickness along the Eurasian continental oceans are closely related to the observed ones. The long-term mean simulated ice motion has the same features of the SSM/I derived ice motion. Sea ice extents in differential sub-regions have same trends comparing to the satellite passive-microwave data derived ones. Simulated ice concentration is closely related to the observed in the Arctic sub-regions. Sea ice flux through the Fram Strait involves ice concentration, motion and thickness. It is a composite criterion for sea ice model evaluation. The simulated ice area and volume export through the strait accord with the satellite derived or statistically reconstructed ones.(5) The simulated ice thickness climate variability and mean sea surface current of the coupled model were analyzed, results showed: the total ice volume in the Arctic Ocean has a significant decreasing trend. The volume variability is of a 10-year timescale oscillation, with two major periods of 12-13a and 18-20a. Mean ice thickness in the arctic sub-seas has different tendencies. It has an increasing trend in the Barents-Kara Sea and Baffin Bay-Labrador Sea, and decreasing in the others. The characteristic time scale of 7-10a wherein the river discharges leads the Fram Strait ice volume export is about the period that river water takes to be conveyed across the Arctic Ocean.(6) Using the simulated ice distribution in the Arctic Ocean and China precipitation, air temperature and SST in tropical key regions, the climate teleconnection were studied. Result showed: When the mean sea ice thickness is large in the central Arctic Ocean and Chukchi-Beaufort Sea , and small in the Barents-Kara Sea and Baffin Bay-Labrador Sea , the precipitation in South China, Tibetan Plateau, and the north part of Northeastern China are always smaller than normal, and v. v. When the mean ice thickness is small in CA, BC, East Siberian Sea and Greenland-Iceland-Norwegian Sea , and large in BL, The air temperature in north-eastern China, the southern of Tibetan Plateau, and Hainan Island, are always lower than normal, and v. v. In addition, when the sea ice is thick in BC and BL, the SST is larger in the middle and eastern Pacific Ocean, and is smaller in the tropical Southeastern Indian Ocean.

由于BOM没有考虑透射太阳辐射的物理过程，研究表明透射太阳辐射对北冰洋的能量收支起到重要作用，因此在BOM模式中引入了对透射太阳辐射的处理；通过对不同水道反照率的数值试验表明海冰厚度对水道反照率的敏感性不强，可能与海冰区水道面积占的比率很小有关；而模式模拟的北极海冰夏季&过度融化&主要源于NCEP再分析资料提供了偏大的太阳短波辐射；对北极海冰的气候变率进行了模拟研究，结果表明：模拟的海冰厚度变化与潜艇探测的海冰吃深度变化具有一致性；模拟和观测的亚欧大陆沿海的年内最大海冰厚度有很好的相关；模拟的海冰移速与长期平均的卫星反演的海冰移速具有相同的速度分布特征；模拟的各个海区海冰面积的变化趋势与卫星反演资料分析的结果基本一致；模拟与观测的主要海洋分区的海冰密集度具有很好的相关：弗瑞姆海峡的海冰体积和面积的输送涉及到海冰密集度、厚度和移动速度，是判断模式模拟能力的一个综合的指标，模式模拟的结果与卫星反演或重建的面积输送、体积输送具有很好的一致性；(5)分析了模拟的北极海冰厚度的气候变率及气候平均表层海流场，结果表明：北极海冰的总体积有显著减少的趋势，北极海冰总体积的变化具有10a际尺度振荡的特点，存在18-20a和12-13a两个主周期；北极海冰的平均厚度在各个海区的变化趋势不同，在巴伦支—喀拉海和巴芬湾—拉布拉多海地区海冰厚度有显著的增加趋势，而其它海区存在减少的趋势；通过对模拟的气候平均表层海流的分析表明，北极河流流量超前弗瑞姆海峡海冰流量7-10年的特征时间尺度与表层海流的气候分布存在着必然联系：(6)利用模拟结果以及中国降水、气温和热带关键区SST资料，讨论了北极各海区海冰平均厚度与中国降水、气温以及热带关键区SST的关系，结果表明：在北极中心海区和楚科奇—波弗特海海冰厚度偏大，在巴伦支—喀拉海以及巴芬湾—拉布拉多海海冰厚度偏小，则中国降水在华南地区、青藏高原和东北北部降水偏少，反之相反；在北极中心海区、东西伯利亚海、楚科奇—波弗特海以及格陵兰海海冰厚度偏小，在巴芬湾—拉布拉多海海冰厚度偏大，则在中国东北地区、高原南部地区和海南岛附近气温偏低，反之相反；另外，北极楚科奇—波弗特海和巴芬湾—拉布拉多海海冰厚度偏大时，在热带中东太平洋海温偏高，而在热带东南印度洋海温偏低。

This experiment represents a new strategy for SETI, postulating microsecond timescale pulses as opposed to longer pulses or narrowband signals.

本实验展现了 SETI 一个新的策略：为 SETI 假定了微秒尺度的脉冲作为较长脉冲和窄带的对立面。

Does photosynthesis affect grassland soil respired CO2 and its carbon isotope composition on a diurnal timescale ?

在一天的尺度上，光合作用是否影响草原生态系统的土壤呼吸及其碳同位素组成？

On the contrary, the opposite pattern occurs when the AACEF is stronger.(3) On interannual timescale, the changes in the SH Ferrel cell lead to the anti-phase variation of the subtropical high and the circumpolar low, i. e., the Antarctic oscillation .

研究发现，当夏季南极涛动偏强时，南极极涡和高纬度的西风急流强度都偏强，但中低纬度西风急流的强度偏弱；反之，当南极涛动偏弱时，南极极涡和高纬度西风急流强度将偏弱，中低纬度西风急流强度将偏强。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。