持效期,persistence
1)persistence[英][p?'s?st?ns][美][p?'s?st?ns]持效期
1.Induction and persistence of chlopyrifos-degrading microorganisms in Soils;土壤中毒死蜱降解菌的诱发和持效期研究
2.Effects of fulvic acid on bioactivity and persistence of acetochlor黄腐酸对乙草胺生物活性及持效期的影响
3.Lucaojing NO 2 SL was developed by our research institute The Product has many advantages such as better effect and longer persistence The results of field trial in Wuhan ,Nanchang and Hangzhou railway bureau showed that it could completely meet the need of railway herbicidal demand经本所近一年的努力 ,研制开发了又一铁路专用除草剂“2 8%路草净 2号SL” ,经武汉、南昌、杭州等各路局试验表明 :该品种具有速效性好、持效期长等优点 ,一次施药可控制杂草 4个月以上 ,一年内两次施药 ,完全可以达到根除铁路杂草的目
英文短句/例句

1.48% Lorsban EC can kill all nymphs and the effective period is short.48%乐斯本乳油能杀死各龄期若虫,但持效期短;
2.Effects of fulvic acid on bioactivity and persistence of acetochlor黄腐酸对乙草胺生物活性及持效期的影响
3.The letter of credit is valid for 15 days after the shipment date.赵: 信用证有效期持续到持运期后15天。
4.security of tenure合同在期限内持续有效的保证
5.Can you hold ( make ) the offer firm until meet friday ?贵方报盘有效期能否保持到下周五呢?
6.The organization shall maintain records of effective dates of process changes.组织应保持过程更改生效日期的记录。
7.Regular correspondence leads to a close relationship.定期通信是保持密切关系的有效途径。
8.Evaluation on Effect of Funds Allocation for Follow-up Support to Resettlement for Reservoir Construction水库移民后期扶持资金分配效果评价
9.E. The people who hold the card must pay commission charge before period of validity.持卡者须在有效期前到俱乐部交纳相应手续费。
10.Fleischl's temporary improvement on taking cocaine was short lived.弗雷氏服用可卡因的短期效益没有持续多久。
11.That said, I am skeptical about the length of the patent term for pharmaceuticals.这就是说,我对专利权的有效期限持怀疑态度。
12.An Empirical Research on Management Stock Position and Corporate Performance in Transitional Economy;转型经济时期管理层持股与公司绩效实证研究
13.Optimization Model of Asset-Liability Portfolio Base on the Effective Duration;基于有效持续期的银行资产负债组合优化模型
14.On long-term mechanism to keep benchmark of a college student communist at new era;探索新时期大学生党员保持先进性的长效机制
15.The Construction of Lasting Mechanism to Maintain the Party Members′ Advancement in New Era;构建新时期保持共产党员先进性的长效机制
16.Benefit Analysis of the 1st Phase of Yih Ju League Soil and Water Conservation World Bank Loan Project;伊盟水土保持世行贷款一期项目效益分析
17.Adhering to "Effect Being First While Giving Consideration to Fair"Principle in New Stage;新时期仍需坚持“效率优先,兼顾公平”的原则
18.The Mechanism Study on How to Improve the Later-stage Support Training Effect for Migrants from Three Gorges Area提高三峡移民后期扶持培训效果的机制研究
相关短句/例句

Effective duration持效期
1.500F,whose effective duration is about 26 days,presents ob.72%,显著地高于常用药剂腈菌唑;对黄瓜白粉病的持效期可达26d左右,并有明显的治疗作用。
3)Effective Duration有效持续期
1.Optimization Model of Asset-Liability Portfolio Base on the Effective Duration;基于有效持续期的银行资产负债组合优化模型
4)effective duration of anti-dropping流滴持效期
1.The effective duration of anti-dropping film was confirmed for above the 12 months.在各种工艺条件下对薄膜的流滴持效性作了研究,确保了薄膜的流滴持效期达12个月以上。
5)antifog durability无滴持效期
6)Sustaining expectation effect维持性期望效应
延伸阅读

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。