In order to satisfy function requirement, its especially important to keep the landscape water quantity balance.

为不影响景观效果，保证景观水体的水量平衡极为重要。

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One-side arrangement for feed water pipe on drum is simple and the quantity of orifices on drum decreases, it adopts variable pitches in multi-orifices distributing pipe to balance water flow.

单侧进水的汽包配水管布置简单，并减少了汽包上的开孔数量，配水管上采用变节距分配孔以保证汽包长度方向上的均匀分流。

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In this paper the water balance method is used to analyse groundwater resources and allowable exploitation quantity of karst fissure water in the Mishian basin.

本文运用水均衡方法，对密县盆地地下岩溶水资源及允许开采量等进行了分析。

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