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     729 is based on the Conjugate-Structure Algebraic Code Excited Linear Prediction (CS-ACELP), which has 8kb/s rate, the low the delay and high quality of the synthesis pronunciation, So research and implement the CS-ACELP is of great significance.
     729语音编码方案采用共轭结构代数码本激励线性预测(CS-ACELP)技术,算法具有8kb/s的编码速率、较低的延迟和高质量编码语音,因此,研究和实现CS-ACELP算法具有重要意义。
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     Research and Improvement in Mixed Excitation Linear Prediction(MELP) Method
     混合激励线性预测(MELP)方法研究与改进
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     Focused on the features and requirements of flutter boundary prediction (FBP), the method presented here is introduced and investigated around precision, anti-noise and short sample.
     针对飞机颤振边界预测(Flutter Boundary Prediction,FBP)的数据特征及分析要求,论文从预测精度、抗噪性、短样本效应三个方面考察了所研究方法的适用性和可靠性。
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     lt is used for coding at 8 kb/s speed by Conjugate Structure Algebraic-Coder-Excited Liner Prediction(CS-ACELP) algorithm, which has a 15 ms delay.
     它采用了共轭结构代数码本激励线性预测(CS-ACELP)算法,其编码速率为8kb/s,延时为15ms。
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     The 8kbit/s speech compress coding G729A was recommended by ITU-T in June 1996 based on Conjugate Structure-Algebraic Code Excited Linear Prediction (CS-ACELP).
     729A是国际电信联盟电信标准部门(ITU-T)于1996年6月制定的8kbit/s语音压缩编码标准,采用共轭结构—代数码本激励线性预测(CS-ACELP)技术。
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  “预测(”译为未确定词的双语例句
     EC could be evaluated for estimating total potassium (R~2=0.687,P<0.001,accuracy was 30.2%).
     总钾含量可依据电导率进行预测(R2=0.687,P<0.001,精度30.2%);
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     EC and pH could be evaluated for estimating ammonium nitrogen(R~2=0.717,P<0.001,accuracy was 19.6%).
     铵态氮含量可依据电导率和pH进行预测(R2=0.717,P<0.001,精度19.6%)。
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     Power Market Analyses on 2001 and Demand Forecast for 2002
     2001年全国电力市场分析与2002年电力需求预测(英文)
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     The equation of estimation by using AC and CD was established (FW = 269.6 x AC+ 438.4 x CD-7642.8),the coefficients was 0.67 (P < 0.001) .
     以AC、CD预测(FW=269.6×AC+438.4×CD-7642.8). r=0.67(P<0.001)。
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     Based on the characterization of vibration spectra, the FBB of (NH 4) 2B 8O 13·6H 2O was predicted, as [B 7O 11(OH)·B(OH) 3] 2-, and the strong and sharp band around 516 cm -1 in Raman spectrum was tentatively assigned to its symmetric pulse vibration, firstly.
     根据振动光谱特征 ,预测 ( NH4 ) 2 B8O1 3· 6H2 O中所含基本结构单元为 [B7O1 1 ( OH)·B( OH) 3]2 - .
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     Neologism Prediction
     新词语的预测
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     Prediction of pregnancy induced hypertension Syndrome
     妊娠高血压综合征的预测
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     (2)preliminary test;
     (2)预测验;
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     (3) attack forecasting.
     (3)攻击预测.
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  prediction (
Prediction for Two Processes and the Nehari Problem
      
We exploit an analogy between the trigonometric moment problem and prediction theory for a stationary stochastic process.
      
Prediction for two processes and the nehari problem
      
We exploit an analogy between the trigonometric moment problem and prediction theory for a stationary stochastic process.
      
However, whatever method is used, real industrial applications need to establish well-defined and widely accepted protocols for validating the models and defining their robustness, prediction power and applicability domain.
      
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This paper presents several considerations which are usually overlooked by designers of power oscillators. Effects of the shape of the path of operation upon the plate efficiency of the oscillators are discussed and methods of improving the plate efficiency are mentioned.

普通设计强力振荡器时,每忽略真空管工作路之重要性。本文指出相角及谐波对於工作路图之影响以解释何以实际上强力振荡器之效率,每较设计时所预测者较低。本文并述及增加振荡器板极效率之各种方法。

Results of planting large amount of slightly but evidently diseased tubers undernatural field conditions obtained by inoculation during the harvesting time of theprevious year indicate that successive underground secondary infections from plantto plant of the same hill constitute the main feature of the process of formation ofprimary foci of subsequent aerial spread of the late blight in a potato plantation Inspection at the time of emergence revealed that all the sprouts found at theperiphery of and directly...

Results of planting large amount of slightly but evidently diseased tubers undernatural field conditions obtained by inoculation during the harvesting time of theprevious year indicate that successive underground secondary infections from plantto plant of the same hill constitute the main feature of the process of formation ofprimary foci of subsequent aerial spread of the late blight in a potato plantation Inspection at the time of emergence revealed that all the sprouts found at theperiphery of and directly connected with the tuber lesions were blackened and diedunderground.Among the sprouts which were about to emerge,those standing closeto the dead sprouts were also discolored at their basal portion,while those furtherapart still entirely healthy.Dark brown extended lesions can sometimes be seen onthe stems of the weak potato seedlings,but sporangial covering was present onlyon their lower underground portions.The stem lesions did not always reach theextremity of the stem base.Even if they did,they might not be directly connectedwith the tuber lesions. Among a total of 789 hills planted with disesed tubers in Peking and Salintzein 1956,only 9 plants with stem lesions were found,of which 5 wilted and diedrapidly,1 with its lesion healed up.The remainder stayed long enough for thefungus to sporulate on their above-ground portion of the lesions and cause thefoliage infection of the same plant and adjacent plants at the onset of a favorable weather. It is believed that the significance of the weak diseased seedlings with basalstem lesions appeared early in the season consists chiefly in the capacity of givingrise to sporangia which may again infect the underground portion of the stem of ahither to healthy plant.On the stem of a larger plant,the fungous mycelium canonly exist in the cortical tissue spreading upward and downward from the infectioncourt to cause a dark brown stripe of irregular width.Stripe lesions of this typeapparently do nto impair the normal development of the plant,but their above-ground portions serve as a persistent potential source of aerial infection. Observations outlined above together with the results of an experiment ofseedling top inoculations under field conditions lead us to postutate that delayedaerial infection is due on the one hand to the fragility of the diseased seedlingsunder natural field conditions and on the other to the lack of a suitable combinationof moisture and temperature required for sporulation and infection as the springweather is characterized by very low night temperature. It is anticipated that local forcasting service may find it helpful to plant diseasedtubers in a proper field plot for the observation on the development.of the foci ofpotato late blight.

在河北省沙岭子农业試驗站和北京农業大学試驗农場1955和1956两年所进行的病薯栽培試驗,表示土中的重复侵染是中心病株形成过程的基本特征。当挖掘出土初期的病薯时,發現直接与种薯病斑相連的幼芽都在出土之前变黑死去,剛剛露土的幼芽中,靠近已死幼芽的莖基也开始部分变色,距离較远的则仍然健全。在已出土的衰弱幼苗上常常可以看到露在地面的莖基部分也显出暗褐色的病斑,但是沒有孢子囊,而該病斑的地下部分则披有一層孢子囊趺缜o斑并不全是达到莖基的終点,而达到莖基終点的,也不与种薯病斑相連接。1956年在两地播种的789穴病薯中發現了9株这种病苗,其中5株迅速萎蔫而枯死,1株發生莖斑痊愈現象。只有少数出現較晚而維持較长久的弱苗遇到适合气候时能够在地面上形成孢子囊傳染到本株或同穴中其他植株的叶片缙诓∶绲闹饕饔孟匀辉谟谛纬傻叵骆咦幽乙砸鹜ㄖ姓诔沙さ慕≈昵o基的感染。在成株莖部上病菌只能在皮层扩展引致条紋状的暗褐色病斑。这种病斑不严重影响植株的生长發育,但是在露出地面后随时可以形成孢子囊成为空中傳染的經常潜在来源。出土病苗的观察以及幼苗地上部接种試驗結果說明病害延迟流行的原因,一方面是受病的幼苗容易枯死,另一方面是在早期气...

在河北省沙岭子农业試驗站和北京农業大学試驗农場1955和1956两年所进行的病薯栽培試驗,表示土中的重复侵染是中心病株形成过程的基本特征。当挖掘出土初期的病薯时,發現直接与种薯病斑相連的幼芽都在出土之前变黑死去,剛剛露土的幼芽中,靠近已死幼芽的莖基也开始部分变色,距离較远的则仍然健全。在已出土的衰弱幼苗上常常可以看到露在地面的莖基部分也显出暗褐色的病斑,但是沒有孢子囊,而該病斑的地下部分则披有一層孢子囊趺缜o斑并不全是达到莖基的終点,而达到莖基終点的,也不与种薯病斑相連接。1956年在两地播种的789穴病薯中發現了9株这种病苗,其中5株迅速萎蔫而枯死,1株發生莖斑痊愈現象。只有少数出現較晚而維持較长久的弱苗遇到适合气候时能够在地面上形成孢子囊傳染到本株或同穴中其他植株的叶片缙诓∶绲闹饕饔孟匀辉谟谛纬傻叵骆咦幽乙砸鹜ㄖ姓诔沙さ慕≈昵o基的感染。在成株莖部上病菌只能在皮层扩展引致条紋状的暗褐色病斑。这种病斑不严重影响植株的生长發育,但是在露出地面后随时可以形成孢子囊成为空中傳染的經常潜在来源。出土病苗的观察以及幼苗地上部接种試驗結果說明病害延迟流行的原因,一方面是受病的幼苗容易枯死,另一方面是在早期气候下不能得到形成孢子和再侵染所需要的温湿度的配合。建議在各地預测站选擇适当地点播种病薯,以便观察病害中心的發展情况,作为預測預报的根据。

1. In this study which has been carried on since 1949,attempts were made toanalyse factors involved in the outbreaks of stripe rust of wheat in North Chinawith a view of giving some clues for forcasting.Five periods of the developmentof an epidemic of the stripe rust in this region are recognized:(1) the infectionand divelopment period of the rust on wheat seedlings in the autumn,(2) the over-wintering period,(3) the over-springing period,(4) the development period in thelate spring,and (5) the over-summering...

1. In this study which has been carried on since 1949,attempts were made toanalyse factors involved in the outbreaks of stripe rust of wheat in North Chinawith a view of giving some clues for forcasting.Five periods of the developmentof an epidemic of the stripe rust in this region are recognized:(1) the infectionand divelopment period of the rust on wheat seedlings in the autumn,(2) the over-wintering period,(3) the over-springing period,(4) the development period in thelate spring,and (5) the over-summering period.For each of the above stated peri-ods,the degrees of the stipe rust development are described and the main factorseffecting the development are analysed. 2. In the autumn,if field conditions were favorable for infection,the earlier ??the date of sowing,generally the heavier the wheat crops would be rusted.Therewere little or no stripe rust developed when the date of sowing wes later than thelast part of September although the condition might be varied appreciably withdifferent localities.Besides temperature,the period of high concentration of air-bornespores was the most important factor determining the disease severity in the earlysown wheat fields. 3. The stripe rust organism was capable of over-wintering in the form of dormant mycelium within infected leaves under the weather conditions of North Chinaplain.Heavy infection of wheat seedlings was the prerequisite of over-wintering,which was also influenced by micro-environmental conditions such as air temperat-ure,soil moisture and protection from wind.Air temperature was probably the mostessential factor. 4. The dry weather and the low moisture contents in the soil in the earlyspring were unfavorable to the development of the rust.Under these conditions,the over-wintering rust might be completely killed off or much lessened,while hig-her soil humidity usually favored the overspringing of the rust organism.Furtherdevelopment of the disease appeared to depend on the amount and frequency ofprecipitation.However,in flooded areas where the soil moisture was excessivelyhigh,epidemics might occur under dry weather. 5. The over-wintering inoculum was most important for local epidemics in spring,although long distance air-borne spore might also have some influence on the rustdevelopment in the later part of the wheat growing season. 6. Uredospores of stripe rust were not capable of over-summering on volunteerwheats in North China plain.Stripe rust collections from Elymus chinense andAgropyron spp.were capable to infect certain wheat varietes when inoculated arti-ficially,but under natural conditions these grasses appeared to play little part inthe aestivation of this rust in the vast wheat growing areas of North China.Theresults of spore-trapping indicated that Chang-Chia-Kow region and certain partsof inner Mongolia where spring wheats mature as late as the end of August weremost probably the reservoir of over-summering fungus which serve as the mainsource of autumnal infection. 7. Since there are great diversity of types of farming in North China,i.e.,(1)the dry land,(2) the well and river-irrigated land,(3) the low land and river-irrigated land of the mid-part of Shansi Province,and (4) the autumn floodedland,and as the environmental factors effecting the first four stages of stripe rustdevelopment were varied,consequently,the rust development in each type of landwas obviously different from others.The disease struck most severely in the wellor river-irrigated and the autumn-flooded lands. 8. Based on the foregoing results,the writers suggest that by means of timelyobservations and inspections on the stripe rust development during autumn and onthe amounts of the Survival after over-wintering and over-springing along with theweather forecasting data,it is possible to make fairly accurate forecast of the striperust epidemics in North China.

1.华北区小麦条銹病主要的流行区域是井水地、渠澆地及水涝地。2.在秋季田間环境对侵染有利的情况下,小麦播种愈早的發病愈重。播种期晚于一定期限(各地不同,一般是9月下旬)發病就很輕或根本不發病。除温度外,空中孢子在秋季集中时期是决定早播病重的最重要原因。3.条銹菌可在华北北部平原的一般气候条件下以菌絲越冬。越冬的条件有二:首先是麦苗發病严重;其次是小气象适合。后者包括温度、土壤湿度与遮蔽物的有無等,其中起主导作用的是温度。4.春季的土壤湿度愈高,对条锈菌的“越春”愈有利。锈菌越春以后的流行一般是决定于雨水的多寡。但土壤湿度过大时(水涝地),也可以不依賴雨水多寡而在小区域內流行。5.春季菌源是多元的,但本地越冬菌起决定性作用,外地吹来的孢子只在后期起輔助作用。地面發病的严重程度和时期与空中孢子發現日期及濃度成正相关。6.条锈菌不能在华北平原的自生麦上和用抱子形态越夏,禾本科杂草中碱草及綠鬚鵝冠草锈菌用人工接种,虽可以發生枯斑反应或长出少数条锈病斑,但在分类上与小麦条銹菌不同,在大面积上不起越夏桥梁作用。根据秋季空中孢子捕捉和地面調查結??果,北方張家口专区壩土及內蒙古平地泉行政区等晚熟春麦区作为小麦条銹菌越夏菌源...

1.华北区小麦条銹病主要的流行区域是井水地、渠澆地及水涝地。2.在秋季田間环境对侵染有利的情况下,小麦播种愈早的發病愈重。播种期晚于一定期限(各地不同,一般是9月下旬)發病就很輕或根本不發病。除温度外,空中孢子在秋季集中时期是决定早播病重的最重要原因。3.条銹菌可在华北北部平原的一般气候条件下以菌絲越冬。越冬的条件有二:首先是麦苗發病严重;其次是小气象适合。后者包括温度、土壤湿度与遮蔽物的有無等,其中起主导作用的是温度。4.春季的土壤湿度愈高,对条锈菌的“越春”愈有利。锈菌越春以后的流行一般是决定于雨水的多寡。但土壤湿度过大时(水涝地),也可以不依賴雨水多寡而在小区域內流行。5.春季菌源是多元的,但本地越冬菌起决定性作用,外地吹来的孢子只在后期起輔助作用。地面發病的严重程度和时期与空中孢子發現日期及濃度成正相关。6.条锈菌不能在华北平原的自生麦上和用抱子形态越夏,禾本科杂草中碱草及綠鬚鵝冠草锈菌用人工接种,虽可以發生枯斑反应或长出少数条锈病斑,但在分类上与小麦条銹菌不同,在大面积上不起越夏桥梁作用。根据秋季空中孢子捕捉和地面調查結??果,北方張家口专区壩土及內蒙古平地泉行政区等晚熟春麦区作为小麦条銹菌越夏菌源基地的可能性最大。7.預測預报应該着重地面的發病檢查,根据冬前秋苗上發生情况和越冬率及越春率等3次發病檢查再参考气象預报,可以真作为短期或較长期的預测預报。

 
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