碱性玄武岩的双凹型REE配分模式是熔体与单斜辉石、石榴石达到化学平衡或近于化学平衡的结果；
The double-concave shape of REE patterns of the alkali basalt show that the basalt melt had reached equilibrium or quasi-equilibrium with the garnet and clinopyroxene megacrysts.
目的观察凹入实验在测定大鼠松质骨生物力学特性的作用，探讨以大鼠椎体进行凹入实验的合理性和简便性。
Objective To investigate the rationality and simplicity of indentation testing of lumbar vertebrae of rats by observing the biomechanical properties of rat cancellous bones using indentation tests.
河道砂岩体在横切河道的地震剖面上一般表现为充填反射状的顶平底凹的单透镜体；
On seismic profile cross-cut the channel, it generally presents as a lenticle with flat top and concave bottom and has the character of infilling in reflection.
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