有效时间

Comparison results show that heat pipe work is not continuous but fluctuant in one work cycle about five months,its actual working time is two-thirds of one work cycle,the cooling effect of heat pipe subgrade in winter is obvious,which is good for the contained cool increase of soil body and improves subgrade heat stabilization,there is a decrease for its cooling strength with the increase of horizontal distance,its effective operating radius is 2.25 m,its maximum cooling strength is in evaporation segment in depth direction,which low the thaw sensitivity of permafrost in the seasonal thaw layer about permafrost table.

研究发现，热棒在约为5个月的工作周期内并非连续工作而呈波动式，实际工作时间为工作周期的2/3；热棒路基冬季降温效果明显，有利于路基土体冷储量增加，提高路基热稳定性；热棒在路基中的降温强度，水平方向随距离增大而衰减，有效作用半径为2.25 m，深度方向在热棒蒸发段最大，降低上限附近季节融化层冻土热融敏感性。

In these lasers, a section of Erbium doped fiber without undergoing bump used as saturatable absorber. A self-written grating may be formed by stable standing wave in this absorber. Because selfwritten grating possesses a characteristic of very narrow rejection band and can suppress any other side-band effectively, so the multi-longitudinal mode and mode jumping in other normal fiber ring laser are removed in this one.

将未泵浦掺铒光纤作为饱和吸收体，利用驻波干涉在掺铒光纤中诱发的自写入光纤光栅，由于自写入光纤光栅具有窄带滤波特性及对边模有效的抑制作用，解决了一般光纤环形腔激光的多纵模和易跳模之问题，获得具有极窄线宽，不跳模时间大于3小时单频激光输出。

The data such as current time, memory total amount, available memory, memory swap file size, available memory swap file size, virtual memory size, available virtual memory size, last random seed and random seed provided by application program have been adopted as random number seed. Thus the problem has been solved efficiently. 2. Solve the self-security integrality problem of common data security architecture.

采用软件方式来实现其随机种子的采集，并采用当前时间、内存总数、可用内存、内存交换文件大小、可用内存交换文件大小、虚拟内存大小、可用虚拟内存大小、上次的随机种子、应用程序提供的随机种子等数据作为随机数种子，有效地解决了这一问题。

The semi-aerobic landfill can eliminate the pollution of nitrogen in the landfill by means of its self-disposal function in a shorter period within the laboratory simulated conditions. This supplies an important idea and way for solution to the problems of high concentration of ammonia nitrogen being difficult to treat in leachate in the middle and final stages.

在室内模拟条件下，准好氧填埋完全能够在较短的时间内利用自身的处理功能，去除垃圾中氮污染，这为解决传统填埋场中后期垃圾渗滤液氨氮浓度高、处理难的问题提供重要启示和有效途径。

Low-concentration, long duration and non-bubble, makes it effectively against the formation of micro-organisms and pipeline gathering slime, algae ponds in the generation, and it can be self-degradation into non-toxic, long-term to use will not cause harm to the environment.

其使用浓度低，持续时间长，不产生泡沫，能有效阻止管路上形成的微生物聚集粘泥及管路、水池中的藻类生成，可自降解成无毒物，长期使用不会对环境造成危害。

Temporal and spatial variations of these indexes can be used to monitor the sea ice of the Bohai Sea.

这些特征指数在时间与空间尺度上的相关变化可有效地应用于渤海海冰的监察。

NOTE 1 The request, tender and contract review should be conducted in a practical and efficient manner, and the effect of financial, legal and time schedule aspects should be taken into account.

注1： 对要求、标书和合同的评审需以可行和有效的方式进行，并考虑财务、法律和时间安排等方面的影响。

The marine growth is removed when the ship is out of the dock in order to prolong docking repair time and life of ship.

在船舶不进坞的情况下，有效地清除附在其外表面上的海生物，有利于延长船舶坞修时间和提高船舶使用寿命。

Purpose To approach to e fficacy of transcutaneous electrical ner ve stimulation for labor pain of parturient.Methods 120 parturients were randomly divided into TENS,oxytocin and control groups,and labor pain,pain tendency,cervical opening time,effcetive uterine contraction rate and blood cort isol content were compared in the three groups.

为探讨皮电刺激对产妇分娩镇痛的效果，在针刺穴位的应用及皮电刺激机理的研究的基础上，将120例产妇随机分为皮电组、催产素组、空白组3个组，分别对分娩疼痛程度、疼痛进展趋势、宫口张开时间、有效宫缩频率及血中皮质醇含量等多项目进行对比。

By surface-overlaid on substrate, the problems can be effectively solved, which are caused by the poor surface quality of substrate, the great difference existing between the transverse and longitudinal strength and rigidity, high water-soaking thickness swell in order to satisfy the requirement of concrete shuttering panel.

实验结果表明：基材结构、施胶方式、施胶量、热压温度、热压时间是影响基材性能的重要工艺参数；对基材进行饰面可以有效地解决基材的表面质量差，纵、横向强度和刚度差异显著，吸水厚度膨胀率高的缺陷，达到混凝土模板的要求。

The basic concept of FOP can be summarized as to further optimize effective prescription according to the standard of curative effects and with the aid of modern science and technology and theories of traditional Chinese medicine.

其基本内涵可概括为：以确有疗效的中药复方为研究对象，以现代科学技术和传统中医药理论为技术支持，以该复方所治病证的药效响应为评价标准，以优化重组疗效更优的新复方为研究目的。

Ever since our world has been a world, native forests have been indiscriminately exploited by man.

自从我们的世界一直是世界原生森林被任意剥削人。