船过闸驶入运河。
探讨内河运输船舶的吨位与面积之间的关系，将有助于合理有效地计算船闸的一次过闸平均吨位。
The relationship between the tonnage and area of inland vessels is needed to calculate the average lockage tonnage reasonably.
本实用新型涉及到一种新型流量计，特别是用于明渠过闸流量的计量场合。
The utility model relates to a flow meter of novel, particularly for the measuring occasion of the lockage flow quantity of open canal.
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