Based on the characteristics that in coal bed gas exist rich benzene and poor N-hexane, the authors propose two indicators as"Benzene lndex"(B)and"N-hexane lndex"(H)to distinguish the coal bed gas.
根据煤层气体具有富苯和贫正己烷的特征，提出了“苯指数”（B）和“正己烷指数”（H）两项判别煤层气的指标。
The standard problems in n-tier Web applications are the same as those for any application: long startup times, poor overall performance, poor performance in specific cases, and application failures.
n层Web应用程序的典型问题与其他应用程序无异：启动时间过长、整体性能较差、无法解决某些具体问题以及应用程序故障。
Soil magnetism of the plough layer is in relatively good correlation with organic carbon and P but shows a rather poor correlation with N and K.
耕作层的土壤磁化率与有机碳、磷含量具有较好的相关性，而与氮、钾含量相关性较差。
The U. N. Food and Agriculture Organization welcomed the announcement, as an "encouraging policy shift to help the poor and hungry."
联合国粮农组织欢迎这个消息，认为这是为了帮助贫穷国家和挨饿的人们而做出的令人鼓舞的政策转变。
The method was used in the complex area where the S/N ratio was poor and reflection residual static corrections were difficult to achieve success, which obtained good processing results.
将该方法应用于信噪比较低、反射波剩余静校正方法难以奏效的复杂地表区，获得良好处理效果。
The distribution direction of fertilizer-N applied at autumn coincided well with the growth rhythm, and could stimulate the tree of poor growth vigor to absorb more fertilizer-N.
以秋施肥料氮的分配与植株生长节奏最吻合，并能刺激生长势弱的植株吸收利用肥料氮。
In fact, glasses are a poor indication of intelligence because you can have bad eyesight for a number of reason. n. s and then choose to wear contact lenses.
事实上，戴眼镜却并不能代表一个人很聪明，由于造成视力不好的起因有良多，而且人们也能够抉择戴隐形眼镜。
N. officials say relief and rescue efforts have been hampered by poor weather conditions, with helicopters in the northwestern Swat Valley grounded on Friday.
在西北部斯瓦特山谷进行救援的直升机星期五被迫停飞。
N. officials say relief and rescue efforts have been hampered by poor weather conditions, with helicopters in the northwestern Swat Valley grounded on Friday.
在西北部斯瓦特山谷进行救援的直升机星期五被迫停飞。
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