String.pos (target [, n]) Finds target in string; 0 if not found "1234".pos (" 23 ") returns 2.
pos (target [，n])在字符串中查找指定子串，如果没有找到则返回0 “ 1234 ” .pos(“23 ”)返回2。
According to the imaging difference of target, background clutter and noise, a moving small target detection method based on spacial high-pass filtering and N-frame track accumulating is presented.
根据目标、背景干扰和噪声在红外序列图像中的差异，提出了一种基于空间高通滤波和时间域上N帧轨迹积累的运动小目标检测方法。
The main content as follows:(1) The yields of optimized N fertilization treatment and conventional N fertilization treatment were no significant differences and all achieved target yield.
研究结果如下：（1）优化施氮处理的棉花产量和传统施氮处理相比无显著性差异，且都达到了目标产量；
Only target bearings could be obtained from passive sonar in general, the typical method used to determine target motion parameters is the"n-bearings"method.
被动声纳观察目标一般只提供目标的方位，基于声纳方位解算目标要素的传统方法是纯方位解要素法。
At last, the target product 4-Hydroxypyridine was gaven by reduction of 4-Hydroxypyridine N-oxide using zinc and Ammonium Formate as catalysts.
然后脱硝基得到4-羟基吡啶-N-氧化合物，最后用锌和甲酸铵还原4-羟基吡啶-N-氧化合物得到产物4-羟基吡啶。
The target product from ester synthesis reaction is ethyl acetate or n-butyl acetate.
酯合成反应的目标产物为乙酸乙酯或乙酸正丁酯；
The target product from ester synthesis reaction is ethyl acetate or n-butyl acetate.
酯合成反应的目标产物为乙酸乙酯或乙酸正丁酯；
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