查询词典 action time

There is a small action range in archery.Simple methods and analysis is inadequate,so the author,on the basis of testing the archery athletes in national team with the Qualisisy infrared photoelectric testing system,Footscan sole pressure testing system,Noraxon myoelectricity remote testing system, etc,analyzes comprehensively the action technique of the athletes in national team from the posture,body motion characteristics,body posture equilibrium and stability,distribution of centre sole pressure, myoelectricity characteristics,etc,with the methods of relative software and data statistics.The conclusions and the suggestions are as follows:Conclusion:Firstly,the communality of posture angle,muscle strength,the activation order of main muscle during raising the bow, raising the bow and the timing of the raising could be used as the evaluation index of technique action in archery;Secondly,the length of the time needed in the different periods couldn\'t be used as technique evaluation index since it has no relation with the result.But the time of raising and pulling back the row is relatively fixed,and the time has a positive relation with the archery achievement of the national team in China.Thirdly,the central index of the sole pressure could be used as the reference criterion of selecting athletes and forecasting achievement.During playing archery,the interrelation between the central index of the sole pressure and the achievement is different individually and in different periods.Fourthly,there is low stability of the archery athletes in the front and back direction during the action, caused by the athletes\' posture disequilibrium of dorsal abdominal muscle and non-professional sport shoes..Fifthly,kinematics and electromyography shows that the people on archery in China haven\'t taken the raising and pulling back the row seriously.

射箭的肢体动作幅度小，简单的手段和分析不能满足其需要，笔者结合各种运动生物力学仪器优点及射箭项目的特性，选用Qualisisy红外光点测试系统、Footscan足底压力测试系统、Noraxon肌电遥测系统等对国家队射箭队运动员进行多方位的测试，运用相关软件及数理统计方法，对运动员的射箭动作技术，从射箭动作的姿态构架、肢体运动特点，身体姿态平衡稳定性、足底压力中心分布、肌电特性等进行全面分析，结论及建议如下：结论：第一，姿态角、肌肉用力激活程度、举弓阶段主要用力肌肉激活顺序、举弓、开弓时间等的一致性可作为射箭技术动作评价指标；第二，各动作阶段所用时间的长短不能作为技术评价指标，但举、开弓的时间相对较固定，开举弓时间比与中国国家队射箭成绩正弱相关达到显著性；第三，闭眼状态下足底压力中心单位面积轨迹长与144支箭最好成绩正相关达到显著性，可作为身体素质、选材及成绩预测的参考依据；实射时身体平衡的足底压力中心指标与成绩的相关程度具有个体性差异、阶段性差异；第四，射箭运动员实射时身体在前后方向上的稳定性较差，这与运动员的站立姿态、腹背肌力量的不匹配以及射箭没有专业运动鞋有关；第五，运动学及肌电学都表明中国射箭训练对举弓、开弓阶段的重视不够，背部肌肉用力特征不明显，撒放技术合理性不高。

The influences of the reaction temperature,re- action time and mass rat...

研究了醚化反应的温度和时间及正溴丁烷(n-C_4H_9Br)与二乙二醇单甲醚的摩尔比对DGBME收率的影响，用气相色谱法分析了产物含量，并用FT-IR和~1H NMR表征了产物结构。

The mitotic indexes decreased and the micronucleus frequency increased with the increase of quality concentration and prolonging of action time.

水浸提液对蚕豆根尖的影响存在显著的时问效应和质量浓度效应。

The difficulty of CT reconstruction increases in non-medicinal fields, for the reason that the short action time and the limited operator domain of the physical fields being measured.

CT重建在非医学领域，由于被测量的物场具有作用时间短、作用域小等特点，从而加大了难度。

To satisfy the requirement of different users, a three-phase four-leg circuit topology inverter is investigated to balance output voltage. The transfer functions and system transfer functions matrix are deduced. Three-dimensional space voltage vector modulation strategy is analyzed. The triangular prism judgment, the tetrahedron discrimination and computational methods of space vector action time are discussed.

推导了三相四桥臂逆变器的传递函数，建立了系统传递函数矩阵；分析了三维空间电压矢量调制策略，给出了三棱柱判断、四面体的区分、各个空间矢量作用时间的计算方法，并进行了仿真和实验研究。

Therefore, in order toenhance the concentration of podophyllotoxin in the skin, reduce side effects and extend the action time on the cells with pathological changes, some reform is necessary in the dose type.

为了增加鬼臼毒素在皮肤局部的浓度，减少因吸收引起的全身毒副反应，延长对病变细胞的作用时间，我们对其进行了必要的剂型改造。

Action time is very short at higher frequencies generally select direct-acting type, large-caliber use rapid serial.

动作时间很短频率较高时一般选取直动式，大口径选用快速系列。

The following cases, to go with locator: 1, medium pressure high pressure big time; 2, valve diameter is large Forged Gate, Globe, Check Valves (DN 00); 3, high or low temperature control valve; 4, the action necessary to raise the speed control valve; 5, using standard signal, the operation of non-standard spring when the implementing agency (20 ~ 100KPa spring outside the range); 6, when used for sub-process control; 7, when the valve to achieve the reverse action (air to close each open-type gas conversion); 8, need to change the valve's flow characteristic time (you can change the positioner cam); 9, no spring actuator or piston actuator, the proportion of action to achieve the time; 10, electrical signals to operate pneumatic actuator must Distribution - gas valve positioner.

下列情况下，要配定位器： 1、介质压力高、压差大的时候； 2、调节阀口径大时（DN00）； 3、高温或低温调节阀； 4、需要提高调节阀的动作速度时； 5、用标准信号、操作气动管路截止阀非标准弹簧的执行机构时（20～100KPa以外的弹簧范围）； 6、用于分程控制时； 7、使阀门实现反向动作时（气关式和气开式互相转换）； 8、需要改变阀的流量特性时； 9、无弹簧执行机构或活塞执行机构，要实现比例动作时； 10、用电信号去操作气动执行机构时，必须配电-气阀门定位器。

The combustion of emulsion explosive matrix is nearly relational with the temperature of the environment, the delayed-action time will extend when the non-adiabatic semenov parameter is around the critical value.

其燃烧与环境温度有着密切的关系，当非绝热semenov数处于亚临界和临界值时，爆炸延滞期延长。

Once the temperature of the environment exceeds the critical explosion temperature, the delayed-action time will shorten along with the temperature of the environment ascending;(2) The thermal decomposition reactivity activation energy and correlative parameters of the emulsion explosive matrix and corresponding mixture of emulison explosive with combustible oil solvent were obtained by iron-plate experiment, thereinto, the activation energy of the emulsion explosive matrix is 163.3kJ/mol.

一旦环境温度超过临界爆炸温度，随环境温度的升高，爆炸延滞期将变短；(2)通过铁板实验获得了乳化炸药基质及其与有机溶剂混合物的活化能和相关参数，其中乳化炸药基质的活化能为163.3kJ/mol。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。