2．关系阻力（relational resistance） 这类阻力只存在于咨询者与来访者之间。它主要表现为来访者在心理上不愿攀近咨询者或从心理上敌视、对抗咨询者。
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然而，为改进其水动力学性能和促进其实用化，尚有一些问题需要解决，例如有关三体船构型与阻力性能的关系。
There, however, are still some problems to be tackled to improve its hydrodynamic performances and promote its practical use, such as the relation between the configuration and its resistance.
文中分析了该装置的工作原理，气动力与提水阻力的关系；
The working principle of the plant and the relation between the aerodynamic force and the drag of water lifting are discussed.
试验中发现了若干表现密度与切削阻力关系分散性的某些特点的现象。
Some phenomena were noted during the tests indicating certain characteristics of the scatter of the density-cutting resistance relation.
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