风暴相对螺旋度用于预报时计算的难点在于确定预报风暴移动速度。
It is difficult for the application of relative storm helicity in predicting storms for the uncertainty of storm velocity.
根据模糊聚类与模糊识别理论，基于模糊环境下的目标函数，提出了一种确定预报因子权重的理论模式。
According to fuzzy clustering theory and fuzzy pattern recognition theory, a theory and model deciding forecast factor weight was present on basis of fuzzy object function in this paper.
在适应和减轻气候变化的农艺措施上确定优先重点，包括研究工作和监测、预报影响及收集数据的体系；
Priority setting in agronomic options for adaptation and mitigation including research and systems to monitor and predict impacts. and in data collection
云仍然是全球气温变化预报中最主要的不确定因素(除去人类是否有决心控制温室气体排放这一因素之外)。
Clouds remain the biggest source of uncertainty (apart from human decisions to control greenhouse gas emissions) in predicting how much global temperatures will change.
但很多公司仍发布年度预报，尽管不确定性还在搅动他们的市场。
But many companies are still issuing annual forecasts in spite of the uncertainty roiling their markets.
它可以确定设备整体或局部是正常还是异常，能早期发现故障及其原因，并能预报故障发展趋势。
It can determine equipment whole or local is in normal or abnormal, found early fault and the reasons, and can forecast fault development trend.
她说尽管仍然不能十分确定，但是“我们相信，这是我们解释太阳风暴为什么爆发和如何预报所需要的。”
Despite that uncertainty she says "we are confident that this is the breakthrough we need to understand why flares erupt and to be able to predict them."
早期尝试去预报人类生存能力基于种群数量统计学的不确定，无论一个单独的幸存者从一年到了下一年因为一个重要的机会而增多。
Early attempts to predict population viability were based on demographic uncertainty Whether an individual survives from one year to the next will largely be a matter of chance.
如果您已完成了上述所有，但仍不能确定什么时候有这样的小马驹，听上的慷慨已经等待那些谁提供无线电天气预报。
If you have fulfilled all of the above and are still not sure when to have this foal, listen to the weather forecast on the radio that has been so generously provided by those who wait.
论述了滑坡坡面位移特征，提出了根据坡面位移矢量确定滑坡滑动面、预报滑坡发生时间的原理和方法。
The author presents the theory and method to determine slip surface and forecast landslide time in respect to surface displacement vector of slope.
在此基础上，联合降雨预报和洪水预报确定了桓仁水库动态控制汛限水位的上限。
Combined with precipitaton forecast and flood forecast, the upper bound ofdynamic control on limit water level of Huanren Reservoir in flood season was determined.
利用实效雨量计算方法，确定了大降雨型滑坡临界雨量，以此为依据建立了潜势预报模型。
The critical rainfall amount was determined and the potential forecasting model of heavy rainfall regime landslides was built with the effective rainfall method.
研究结果表明，运用该模型方法可利用大地测量数据确定沿板块边界断层带的相对闭锁区，从而进行中长期地震预报。
The research result shows that this physical model is useful to determine the locked area along plate boundary faults and further to make the long term and middle term earthquake prediction.
利用三门峡新一代天气雷达资料，分析了冰雹天气时雷达产品的特征，并确定冰雹天气预报指标。
Using the CINRAD data in Sanmenxia, the paper analyzes radar product characteristics and confirms hail weather forecast index.
以欧洲中期天气预报中心的集合预报系统的控制预报和集合预报为例，对确定性预报和概率预报的情况分别进行了说明。
Using the ECMWF ensemble forecasting system as an example, a deterministic forecast case and a probability forecast case are discussed, respectively.
确定侵蚀性降雨的标准，是土壤侵蚀预报研究的一项基本内容。
Its criterion is one of the basic contents concerned with study on predicting soil erosion.
运用产生降水的指标性物理量分布、卫星云图降水概率分布和模式的降水预报等综合确定作业区的地理位置。
The operation location can be determined by means of precipitation indexes, precipitation probability of satellite cloud pictures and model forecasts.
建立ROC曲线确定术前淋巴结转移预报的界定值。
ROC curve was used to determine the cut-off value of pre-operative metastases prediction.
利用此比值常数以及由测震学指标所确定的T_1和求得的T_2可以进行确定性的中长期地震预报。
By means of this ratio and T_1, T_2, determined by seismometry, the mid long-term forecasting of earthquakes can be done.
通过对舰船运动姿态统计分析，以及对ARMA模型和AR模型等价性论证，确定了AR模型作为船舶姿态运动预报的数学模型。
By the statistical analysis of ship motion attitude and equivalent argument about ARMA model and ar model, ar model was identified to be the mathematic model for ship motion attitude prediction.
通过误差平方和的比较，确定利用基于输出误差（OE）模型的预报误差法所建立的模型的精度最高。
Through comparing their sums of squared error, it was concluded that prediction error algorithm-based OE model has the best precision.
低压区仍浅和大的，并且中心仍然被不很好地确定，如此预报这场台风可能是难的。
The low pressure area is shallow and large, and the center is still not well defined, so again the forecast of this typhoon may be difficult.
介绍了利用卡尔曼滤波制作温度预报的一种因子选取方法和滤波过程中初值的确定、递推系数修正的处理办法。
The methods of the predictor selection in the temperature forecast, the determination of the initial value in the filter process and the revision of the recurrence coefficient are introduced.
这对于分析和改进对这类碰撞的预报，确定撞击时刻和撞击点位置，以及今后研究撞击黑斑的变化，都有一定的意义。
This is meaningful for analysis and improvement of the impact prediction. As well as for researching variations of the impact sites.
建立了水流诱发长跨平板闸门顺水流方向弯曲振动自激响应的数学模型，通过试验确定了振动方程中的参数，达到可预报闸门振动的目的。
The differential equation of long span plate of flexual vibration is established in this paper. The parameters in the equation are determined by the model experiment.
通过仿真研究，确定了遗忘因子和初始条件的最佳值，实现了对过程故障诊断和预报。
The optimum values of oblivious genes and initial conditions can be confirmed, and also the process fault diagnosis can be realized through the simulation experiments.
提出了反映液压系统工作状态的“状态曲线”，用其进行液压系统的故障预报及维修期的确定。
A "status Curve" reflecting the operating status of hydraulic system is suggested to be used in the failure forecast and determination of service intervals of the hydraulic system.
另外，本文采用《水文情报预报规范》中的确定性系数作为目标函数，使得预报结果更加直观。
In addition, the thesis took the certain coefficient in "forecasting norm for hydrology intelligence" as the objective function in order to make the forecasting result more clear.
另外，本文采用《水文情报预报规范》中的确定性系数作为目标函数，使得预报结果更加直观。
In addition, the thesis took the certain coefficient in "forecasting norm for hydrology intelligence" as the objective function in order to make the forecasting result more clear.
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