1) flood peak period
洪峰期
1.
The feasibility of adopting steep slope mining at main quarry is discussed against stripping ratio is high in flood peak period,and the preliminary scheme is put forward.
针对主矿采场正值剥离洪峰期剥采比较高的问题 ,对主矿采场实施陡帮开采的可行性进行论述 ,并且对陡帮开采方案提出初步设
2) flood peak
洪峰
1.
Study on propagration time of flood peak for Liaohe river and its tributarys in Shenyang city area;
辽河及支流洪峰在沈阳境内传播时间研究
2.
Based on the date of Chaohu river network of waterways area 8 survey station of many year materials,The relations between,its flood peak and the year of the largest flood runoff one day is established,its corresponding coefficient of variation Cv value is calculated and the distribution rule and origin of the Cv value is analyzed.
通过对巢湖水系河网区8个测站多年资料,建立其洪峰与年最大一日洪量关系,计算其对应变差系数Cv值。
3.
The Gumbel logistic model is used to describe the dependent structure between the flood peak and flood volume and a bivariate joint distribution of peak-volume using PDS sample approach is developed.
以隔河岩水库坝址洪水研究为例,分析了当洪峰超过其某一频率的设计值时,各不同频率的设计洪量发生的条件频率,并对同频率设计值组合的两变量重现期进行了计算。
3) flood peak discharge
洪峰流量
1.
Experimental study on effects of flood peak discharge on formation of cross-section in the lower Yellow River;
黄河下游洪峰流量对断面塑造作用的试验研究
2.
Effection factors on the accuracy of flood peak discharge using gradiet method;
比降法推求洪峰流量精度的影响因素
3.
Based on Min Qian power function formula of flood grade, one method for classifying flood grades by standardized value of flood peak discharge or flood peak stage is put forward in this paper.
在闵骞幂函数洪水等级公式基础上,提出了利用洪峰流量或洪峰水位的标准化值进行洪水等级划分,并对嘉陵江北碚站洪水等级进行了划分。
4) peak discharge
洪峰流量
1.
2 m of Tongguan elevation in peach flood season under the present boundary condition of the channel are as follows: peak discharge of Tongguan Station 2 500 m3/s,flood volume of 10 d 1.
2m左右的条件为:潼关站洪峰流量为2500m3/s,10d洪量为13亿m3,三门峡水库起调水位为313 m。
2.
At the same time,the design flood peak discharge and hydrograph are calculated by analyzing the flood of YanQu gauging station and the frequency of the flood.
本文对重庆市巫溪县弯滩河流域及其流域上拟建的五座电站的坝址处进行了径流分析和计算,并对盐渠水文站洪水分析和频率计算,得出了各梯级电站的设计洪峰流量及洪水过程线,为弯滩河流域梯级开发提供了水文依据。
3.
The obtained new formula of peak discharge envelope curve of known maximum flood in the world according to a vast amount of f.
根据世界范围内大量的洪水极值,求得世界已知最大洪水洪峰流量外包线的新公式:Qm=154A0。
5) flood peak increase
洪峰增值
1.
Mechanism of flood peak increase along the lower Yellow River and its verification;
黄河下游洪峰增值机理与验证
6) peak flood
洪峰流量
1.
By the comparative analysis of mean flood process and characteristic volume before and after harness ,it shows that though the mean process rainfall after harness is bigger than that before harness, the peak flood and flood volume tend to decrease, and the sediment amount is decreased at 20 percent, and the flood rises and falls slowly.
通过对治理前、后洪水平均过程线及其特征量的对比分析可知 ,尽管治理后的过程平均降水量稍大于治理前 ,但其洪峰流量和洪量呈减小趋势 ,沙量较治理前减小 2 0 %以上 ,且呈现出涨势减缓、退水变慢的特点 ;降雨与洪峰流量、沙量相互关系及其变化分析结果表明 ,发生中小洪水或较大洪水时 ,现状水保措施有一定的削峰减沙作用 ,若遇大洪水 ,则可能因部分库、坝 (塘 )工程水毁而加大洪峰流量 ,使沙量增
补充资料：欧洲式期权、美国式期权与亚洲式期权
欧洲式期权、美国式期权与亚洲式期权
【欧洲式期权、美国式期权与亚洲式期权】期权合约所规定的权利有一定的时效期，过了失效日后，权利即行作废。一些期权规定权利仅能在有效期的最后一天执行，这种期权被称为欧洲式期权(ell功pean叩tions);另一些期权则容许在有效期内任何一天执行，这种期权被称为美国式期权(一~oPtions)。值得指出的是，虽名为欧洲式或美国式期权，但已无任何地理上的意义。由于欧洲式期权的规定过于严格，又出现了一种“改变的欧洲式期权”，它允许期权在一定的时间范围内进行交易。可见，美国式期权为期权购买者提供了更多的选择机会，因此，它的购买者也往往需支付更高的保险费。近年来无论在欧洲或美国，所交易的期权均以美国式为主，欧洲式期权虽仍存在，但其交易量已比不上美国式期权。 在so年代末期，市场上又出现了一种所谓亚洲式期权(asian ontions)，但也无地理上的意义，其差别主要在于履约价值(exe而sev公此)的计算。以买权为例，无论是美国式期权或是欧洲式期权，执行权利所能得到的履约价值均为当时标的物的市价减去履约价格，再乘以合约所定的数量，但亚洲式期权的履约价值则为权利期间内标的物市价的平均(计算至履约日为止)，减去履约价格，再乘以合约所定的数量。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条