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we must do
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  必须做到
     In the management of the medical quality in the sanatorium, we must do: the classify of the recuperate diagnosis should be accurate;
     疗养院在疗养质量的管理中 ,必须做到 :疗养诊断要分类准确 ;
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     To deal with the establishment of open education teaching process in modern distance and several problems to supervise the teaching quality,we must do as follows:accomplishing our duties with all heart;
     要解决好现代远程开放教育教学过程的建立和对教学质量监控的若干问题必须做到 :尽职尽责 ,把稳方向 ;
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  “we must do”译为未确定词的双语例句
     We must do our best to strengthen and establish bedroom culture at college.
     我们必须切实加强高校“寝室文化”建设。
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     In order to make the investment control play its due role in engineering construction, we must do well investment estimate in decision-making stage of the project, control the quality of general estimate of the design strictly, and draw up a construction drawing- budget carefully.
     为使投资控制在工程建设中发挥其应有的作用 ,就必须认真作好项目决策阶段的投资估算 ,严格控制设计概算的质量 ,认真编制好施工图预算
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     We must do our best to cultivate the idea of effective development to promote the overall level of development.
     培育科学发展观念,全面提升整体发展水平。
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     In order to make the best use of its information resources, we must do more research on the avenues to, the methods of and the problems of the exploitation and utilization of its information resources.
     为充分发挥图书馆信息资源的作用,应加强高校图书馆信息资源开发利用的途径、方法及应注意的问题的研究。
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     Conclusions We must do so many work as carry on primary prevention on dangerous factors of cerebral infarction,it is very important that to prevent cerebral infarction recurrerce.
     结论 脑梗死的复发次数越多 ,预后越差 ,加强对危险因素的一级预防 ,对预防脑梗死复发是十分重要的。
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     We must study that urgently.
     中国学界急需在引介借鉴的基础之上,对此进行深入研究。
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     We Must Respect History
     必须尊重历史——俄教育部再版《联共(布)党史简明教程》有感
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     Measures we must adopt are recommended.
     拟采取哪些应对措施 ?
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     we must work heartily and do our best;
     必须满腔热情 ,恪尽职守 ;
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     To master design we must master its methodologies.
     从设计方法论掌握设计 ;
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  we must do
The paper closes with some recommendations concerning what we must do in the future to improve quality of life for this population.
      
And we must do so in ways that allow each of us to choose the path toward reconciliation and a full embracing of one another's humanity.
      
We must do so in ways that name the psychological, economic and social fear involved for whites in identifying too closely with black lives.
      
We must do so in ways that critically address class, gender, nationality and sexuality.
      
In order to tackle the problem, we must do work from two aspects: algorithm and device structure.
      
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In the field of post and communication, the papers about appli- cation of the theory of quality control are seldom seen. This paper discusse the problem of application of quality control, especially the control chart in the field of post and communication. Due to fluctuations of the quantity of demand, in applying control chart, we must do regression analysis of the quality index and the quantity of demand. If the regression is significant, then we must use the selecting control charts proposed...

In the field of post and communication, the papers about appli- cation of the theory of quality control are seldom seen. This paper discusse the problem of application of quality control, especially the control chart in the field of post and communication. Due to fluctuations of the quantity of demand, in applying control chart, we must do regression analysis of the quality index and the quantity of demand. If the regression is significant, then we must use the selecting control charts proposed by the author. Otherwise, the Shewhart's control charts can be used. From the viewpoint of the theory of queue, the system of post and comnun- ication is a system of queue. Hence, the problem that the quality index and the quantity of demand is correlated or not, under the given conditions and within certain limit of the quantity of demand, depend on the characteristics of the system of queue. If the system is of random arrival and service in batch, then it is not correlated in general; if the sgstem is of random arrival and service in order (including the case with priority), then it is correlated in general. The theory presented in this paper has succeeded in the control of over-limit rate and register return rate of long-distance telephone, and begin to be used in Peking, Shenyang and Hupei etc, According to the statistical data in practice, the accuracy of allarm of this selecting control chart is about ten times higher than the Shewhart's control chart. As to the maintenance, this paper lays stress on the importance of correctve maintenance that is cortrolled by the method of quality control. At the end of this paper, it is pointed out that the feature of the industry of post and communication is "more variety, less quantity". Hence it is effective to apply unitedly the same control chart for different cases, provided that the com- mon points in production is grasped. In this paper, many practical examples solved by the author are also included which may be of use to the reader for reference.

在国内外文献中,关于质量控制在邮电部门中的应用很少见。本文专门论述了质量控制,尤其是控制图在邮电各个部门中应用的问题,希望对于我国邮电部门当前推广应用质量控制有所裨益。在邮电通信部门,由于邮电业务量波动的影响,所以在应用控制图时,需要对质量指标和业务量进行相关分析,若有显著相关,则必须采用作者所提出的选控控制图,否则可用休哈特(W.A.Shewhart)控制图。从运筹学排队论来看,邮电通信部门是个排队系统。因此,被控制质量指标与通信业务量是否相关这个问题,在现有的人员设备条件下,在一定的业务量范围内,主要决定于排队系统的特性。若排队系统为随机到达、成批服务,则一般不相关:若排队系统为随机到达、按序服务(包括具有优先权的情况在内)则一般相关。选控控制图已在控制长话逾限率和退号率等方面获得成功,根据北京、沈阳、湖北郧阳等地使用结果证实,选控控制图发现问题的准确度要比Shewhart控制图高十倍左右。在邮电维护方面,本文强调了引进质量控制方法的受控纠正性维护方式的重要性。本文最后指出,邮电工业的特点是“多种少量”,因而抓住加工或生产中的共同点,统一应用控制图是有效的措施。本文附有若干应用实例,大多是作者所解决的实际...

在国内外文献中,关于质量控制在邮电部门中的应用很少见。本文专门论述了质量控制,尤其是控制图在邮电各个部门中应用的问题,希望对于我国邮电部门当前推广应用质量控制有所裨益。在邮电通信部门,由于邮电业务量波动的影响,所以在应用控制图时,需要对质量指标和业务量进行相关分析,若有显著相关,则必须采用作者所提出的选控控制图,否则可用休哈特(W.A.Shewhart)控制图。从运筹学排队论来看,邮电通信部门是个排队系统。因此,被控制质量指标与通信业务量是否相关这个问题,在现有的人员设备条件下,在一定的业务量范围内,主要决定于排队系统的特性。若排队系统为随机到达、成批服务,则一般不相关:若排队系统为随机到达、按序服务(包括具有优先权的情况在内)则一般相关。选控控制图已在控制长话逾限率和退号率等方面获得成功,根据北京、沈阳、湖北郧阳等地使用结果证实,选控控制图发现问题的准确度要比Shewhart控制图高十倍左右。在邮电维护方面,本文强调了引进质量控制方法的受控纠正性维护方式的重要性。本文最后指出,邮电工业的特点是“多种少量”,因而抓住加工或生产中的共同点,统一应用控制图是有效的措施。本文附有若干应用实例,大多是作者所解决的实际问题,可供参考。

During his visit to Beijing, G. R. Burbidge reaffirmed their view point: the statistical distribution of observed number of QSOs versus it's redshift (figure of N-Z) has three peaks nearly at Z≈0.5, 1.5, 2.0 (ef. Fig. 1). Though their statistical analysis based directly on the observation is model-independence, it has no apparent physical meaning. In order to give physical meaning to the relevant quantities, it is necessary to have recourse to cosmological model. Basing on Friedman's model, we have done the...

During his visit to Beijing, G. R. Burbidge reaffirmed their view point: the statistical distribution of observed number of QSOs versus it's redshift (figure of N-Z) has three peaks nearly at Z≈0.5, 1.5, 2.0 (ef. Fig. 1). Though their statistical analysis based directly on the observation is model-independence, it has no apparent physical meaning. In order to give physical meaning to the relevant quantities, it is necessary to have recourse to cosmological model. Basing on Friedman's model, we have done the statistical analysis of 1467 QSOs collected in Burbidge's catalog, then obtained the luminosity evolutionary law of QSOs and the statistical distribution of its number versus the luminosity distance.In Friedman's model, the redshift is naturally related to the luminosity distance:Here H0 is Hubble 's constant, and q0 the deacceleration parameter. Considering that it is recently discoved that the neutrino has rest mass, we only take account of two typical quantities of q0: i.e. q0= + 1 (closed universe) and q0 = 1/2 (flat universe).The vertical axis N in Fig. 1 represents the observed number of QSOs (apparent magnitude m≤21). In order to obtain the distribution of actual number (relative ratio), we must do some reasonable correction. According to the relation between apparent magnitude and luminosity distance :m = M + 5 log dL ?5. (2)we know that the more distant the QSOs are, the less the observed number of QSOs is Therefore, we ought to do number counting after removing all of QSOs at the same distant. Because there are a few of QSOs with largest redshift (Z≈3.5) in Burbidge's catalog, the reference position is chosen at Z=3.0. The apparent magnitude of QSOs after removing them to the position corresponding to Z= 3.0 is called "reduced magnitude" m'. From Bq. (2), we haveSince there is only one of QSOs which m' > 21 in the catalog, we choose the visual limit as 21. If m' < 21, it is counted ; if m' > 21, it is not counted.In addition, we must take acount of luminosity evolution. We must analyse statistically the luminosity distribution of QSOs at different intervals of Z. At first, we count the number of QSOs within the intervals Am = 0.5 and AZ = 0.05. Then, we draw the figures of normalized number counting versus apparent magnitude (cf. Fig. 2). The result reveals that all of Figs. N/Nmax--m at different Z are appeared to have the same shape (normal distribution), especially appear a common peak at m≈1819 (except for Z < 0.3). This suggests that the luminosity evolution of QSOs just compensates the decrease of it's luminosity with distance, so that the apparent magnitude of QSOs at different distance appear the same distribution.Hence, if we take m in Eq. (3) as correspondent constant, and substitute Eq. (1) into Eq. (3), we would obtained the relation between the reduced magnitude of QSOs and redshift Z. For the QSOs at peak, this relation is more accurate, and is written as following:(i) for q0= 1,m = 5 log 3/Z + 18 (4a)(ii) for q0= 1/2, In Friedman's model, it is easily to derive the relations between cosmological time t and redshift Z as following:(i) for q0 = 1,(ii) for q0 = 1/2,Combining the Bqs. (4a, b) and (5a, b), we ultimately obtained the evolutionary law of reduced magnitude of QSOs at peak. For the case of q0 = 1/2, we haveThe curves shown in Fig. 3 represent the theoretical formula above obtained, in which the vertical line segments represent the observed peaks of reduced magnitude of QSOs at different, Z (the interval is chosen as 0.05). The corresponding t are marked in the horizontal axis. (II0 is chosen as 100 km/see kpe.) It is apparent that the observed data is well fit. to the theoretical curves.Because the luminosity evolution of QSOs just compensates the decrease of its luminosity with distance, the observed number of QSOs is also its actual number (relative ratio). The intended correction mentioned at begining is not necessary. Therefore, it is concluded that the Fig. 1 given by Burbidge also represents the actual number distribution of QSOs versus its luminosity distance, provided that

本文以Burbidge最近编纂的类星体表为基础,对1467个类星体作了统计分析,得到了光度演化规律:类星体的光度演化恰好补偿了随距离衰减的效应。采用弗里德曼宇宙模型,进而得出了类星体的折合星等随时间t的演化公式。并且据此论证了Burbidge指出的N-Z图中存在的三个高峰确实表示了类星体空间分布的不均匀性。

In this paepr,the effect of flood retaining of forests have been analyzed in the way of hydrology.The main points are as follows. ①The factors influencing flood retaining of forests are very miscellane- ous.Besides the features of forest itself,what is the most important is the thickness of the soil layer of aeration zone(abbreviated“soil layer”in the following).This is the main reason why the capacities of flood retaining of forests are in great change in different areas. ②The type of runoff generation is related...

In this paepr,the effect of flood retaining of forests have been analyzed in the way of hydrology.The main points are as follows. ①The factors influencing flood retaining of forests are very miscellane- ous.Besides the features of forest itself,what is the most important is the thickness of the soil layer of aeration zone(abbreviated“soil layer”in the following).This is the main reason why the capacities of flood retaining of forests are in great change in different areas. ②The type of runoff generation is related to siol layer;When soil layer is comparatively thin,the runoff generations can be evaluated according to he model of runoff formation at the natural storage.And the type of runoff generation of very thick soil layer on forest land belongs neither in the model of runoff formation at the natural storage nor in the model of runoff formation in excess of infiltration because under this conditions the soil layers can not be filled up with water.Hence it is a special type of runoff formation. ③The capacity of flood retaining of watersheds(regardless of water- sheds forested or not)can be shown by the maximum water storage of water- shed(Im).Where a storm rainfall amount(or a continuous one)is given by the signal x,the index of antecedent soil moisture by the signal Pa,then the effect reducing flood of watersheds will reduce with the increaing of ratio (X+Pa)/(Im). In accordance with above analysis for the mechanism of flood retaining of forests,it can be considered that in Qin-ba mountainous regions,water- sheds(forested)are possessed of a certain effect of flood retaining in early period of the flood,Which occurred in August,1981(abbreviated“81.8” flood in the following)and they,however,are not possessed of their effect of flood retaining in the late period of the“81.8”flood,because the value Im is low due to thin soil layer in spite of being forested. As for problems of flood control in Hanzhong District,undoubtedly comprehensive means and overall planning must be used in the flood control. And now the first thing is that we must do well the planning,construction and the management of river dykes.

本文用水文学的方法对森林拦洪作用作了分析,主要论点如下:①森林拦洪能力的影响因素十分错综复杂,除森林本身的特点外,最重要的是包气带土层(以下简称土层)的厚度。此即不同地区森林拦洪能力变化很大的主要原因。②林地的产流方式与土层的厚度有关;土层较薄时,可按“蓄满产流”模式计算产流。土层深厚的林地的产流方式既不是“蓄满产流”,也不是“超渗产流”。因为这种情况是蓄不满的,因而是一种特殊产流方式。③流域(不论有林或无林)的拦洪能力均可由流域最大蓄水量(Im)表示,当一次(或一次连续)暴雨量为 x,前期土壤水分指标为 P_ ,则流域的削洪作用随(x+P_ )/(Im)比值的增大而降低。根据上述对森林拦洪的机理分析,可以认为:秦巴山区(有林)的流域在“81.8”洪水前期有一定的拦洪作用。但是由于山区土层薄,虽然有林,但 I_ 小,故在“81.8”洪水后期,流域已失去拦蓄作用。对于汉中地区的防洪问题.无疑,应采用综合治理的措施,进行全面规划。但当前首要措施应将堤防工程的规划、施工与管理作好。

 
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