You should think twice before by the hele in batches 在你决定成批购买这些货物之前，你应该三思而行。
2.
Hele - shaw pump 海尔萧泵
3.
The equations for hele - show have been established in this paper to describe feedstock ' s flow in fluid - channel and die cavity . the reasonable solutions for the equations have been given 建立了描述mim喂料在流道和型腔中流动规律的基于hele - show流动的方程组，并提出了合理的方程组求解方法。
4.
At first the rheology behavior of smc is analyzed and a generalized hele - shaw model ( ghs ) , based on the theory of fluid mechanics , is adopted as theory model of compression molding 在文章的理论部分，首先分析了smc熔体的流变行为，基于流体力学基本理论，引用广义hele - shaw模型作为smc模压流动的理论模型。
