The generalized Weng's model, dual logarithm production decline curve model and water drive curve model are popular to use in reservoir engineering study.

在油藏工程中，广义翁氏预测模型、双对数型产量衰减曲线预测模型和水驱曲线模型都是比较重要的预测模型。

The data of experiment for shaly sands have computed with new function. The results show that the accuracy of the new function is higher than the "dual water" model function.

将这两个公式应用于测井解释，对解释泥质砂岩的双水模型作了有效的改进。

The surface water deficit index is extracted based on the dual-layer evapotranspiration model, including soil water evaporation and vegetation transpiration.

地表缺水指数是通过基于亚像元的双层蒸散模型提取的，它既考虑了土壤的水分蒸发，又考虑了植被的蒸腾。

The utility model discloses a dual-two-stage-heat pipe solar water heater comprising a heat collection unit (4), a heat transfer unit and a water tank (3).

本实用新型公开了一种双二级热管式太阳能热水器，包括集热单元（4）、传热单 元以及水箱（3）。