Nudging assimulation of pw can improve prediction slightly , and increasing nudging gain coefficient play a little role in improving prediction Gps可降水量资料的nudging同化对可降水量预报改善较小，并且nudging系数的增加对可降水量预报效果的改善程度影响不大。
All subjects underwent spirometry , measurement of aortic pulse wae elocity ( pw ) and augmentation index , dual - energy x - ray absorptiometry , and blood sampling for inflammatory mediators 所有受试对象都进行肺活量测定、主动脉脉搏波速( pw )和增强指数测量、双能x -线吸收仪检查，以及炎症介质血样检测。
Fig . 3 mcao for 3 hours , pwi showed that the maximun reducing amplitued of time - signal intensity was smaller than that of the left temporal lobe on the right sied , and after reperfusion there was almost identical Pw显示左侧颞叶的时间一信号强度曲线的最在下降幅度较健侧小,恢复血供后两侧基本一致
Gps observation which is about 2km far away from radiosonde site is comparable to radiosonde with a absolute bias of 2 . 13mm on precipitable water ( pw ) observation and 1 . 28cm on zenith total delay ( ztd ) 与常规探空观测相比， gps测量的可降水量有很好的代表性。在相距2km时，两种测量手段测量可降水量和总延迟量的平均绝对偏差分别为2 . 13mm和1 . 28cm 。
In general , 6h accumulated rainfall prediction of mm5 is improved by 3dvar of gps zwd data more significantly than gps pw data although the former improvement is related to the rainfall amount 尽管湿延迟量资料同化对6h累计降水预报的改善在不同的降水等级表现了不同效果，但总体上湿延迟量资料同化对6h累计降水预报的改善程度要高于可降水量资料变分同化。
In this paper , we frist discuss the radar signal pulse and it ' s parameters , then we introduce the principle and method of the measure . at last we introduce how to get the pa , pw and toa based on xilinx spartan - ii fpgas 本论文首先对脉冲及其参数进行了分析，然后介绍了雷达脉冲参数测量的原理，并针对现代复杂电磁环境的特点，对脉冲参数测量的方案进行了设计。
The method can measure the following parameters , ( pulse attitude ) pa , ( pulse width ) pw , ( time of approach ) toa , snr , ( radio frequency ) rf , pulse envelope characteristic parameters and intra - pulse modulation parameters with a high precision and a high discrimination 该算法能够分析雷达信号的脉冲脉幅、脉宽、到达时间、信噪比、载频、脉冲包络特征参数和脉内调制特征参数。
We have two major series of products : one is cb series weighing controllers batching controllers , packing controllers , fixed - value controllers , filling controllers , the other is pw series packing scale pw1 , pw2 , pw4 , pw6 and relative equipments and systems 公司主导产品分为两大类： cb系列称重控制器配料控制器，包装控制器，定值秤控制器，灌装控制器和pw系列包装秤pw1 ， pw2 ， pw4 ， pw6及相关的设备和系统。
Long focus object lens of three color achromatic aberration is one of two posers of optical design , using this method can get a perfect result . compared with pw method , the first results received from the wave - deviation method are more accurate and more rapid 使用此数学模型编的光学自动设计程序，也可以说是光学镜头设计的一种新方法，即实现自动选玻璃，求解初始结构(曲率半径r ，厚度d等)和自动校正像差和优化系统等。
Presently , the laser pulse from the high power ultrashort laser system is several femtoseconds in duration , tw ( or pw ) level in peak power , 1020 w / cm2 ( or 1021 w / cm2 ) in focusing power density , according electric field is much stronger than coulomb field in atoms 目前，高功率超短脉冲激光放大系统输出的激光，脉宽达到几个飞秒，峰值功率达到太瓦甚至拍瓦量级，聚焦功率密度达10 ~ 20w cm ~ 2 ，甚至1021w cm2 ，相应的电场比原子内库仑场强得多。
