After a break, the groups resumed the experiment for another three weeks, with teens assigned to a different calcium intake level for the second stage.
休息后，对这组成员进行另外三个星期的第二阶段的实验，分配给青少年摄入量的钙。
An experiment prototype of 1.5kw three-level inverter has been manufactured, which is driven by "based on FPGA vector generator". We finally got ideal wave in this experiment system.
本文最后搭建了一个基于多电平矢量发生的逆变实验系统，制作了一台用矢量发生器驱动的1.5KW的多电平变换器实验样机，在样机上得到了较为理想的波形。
In this study, a three factor and four level orthogonal experiment was designed to study the biologic effect of ultrasonic radiation on Marine Chlorella.
设计了一个超声频率、超声功率和辐射时间三因素四水平的正交实验，研究超声辐射对海水小球藻的生物效应。
This scheme includes three parts: PCI Bus interface board, experiment flat board and device driver high-level software.
该设计方案由PCI总线接口板、实验平台板、设备驱动程序及上层软件三个部分组成。
The women were told not to eat for three hours before the experiment, so that they would all be tested with the same level of hunger.
在开始试验前的三小时内，这些女性被要求不能吃东西；这样做的目的就是保证在测试进行时，每个被测试者的饥饿程度 是一样的。
A high level energy group was added into this repeated experiment. The experiment included three groups i. e. high, medium and low energy levels.
本重复试验增加一个高能组，共设高、中、低三个能量水平组。
In Shanghai nano special fund support, after three years experiment and research, the bionic solar cells photoelectric conversion efficiency has more than 10%, close to 11% of the world's top level.
在上海市纳米专项基金的支持下，经过3年多实验与探索，这块仿生太阳能电池的光电转化效率已超过10%，接近11%的世界最高水平。
Finally, the operation principle of Zero-voltage and Zero-current-switching PWM three-level converter is validated by the simulation analyze and the debugging experiment of 50V/20A sample device.
最后，通过仿真分析和对50V/20A样机的调试实验，验证了零电压零电流移相控制PWM三电平直流变换器的工作原理。
Finally, the operation principle of Zero-voltage and Zero-current-switching PWM three-level converter is validated by the simulation analyze and the debugging experiment of 50V/20A sample device.
最后，通过仿真分析和对50V/20A样机的调试实验，验证了零电压零电流移相控制PWM三电平直流变换器的工作原理。
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