backward-facing 后向座
backward-facing step flow 后台阶流动
backward facing seat 朝后座椅
backward-facing Mach cone 面向后的马赫锥
On this day, Morrie says that he has an exercise for us to try. We are to stand, facing away from our classmates, and fall backward, relying on another student to catch us.
一天，莫里老师说要让我们进行一次测验：我们背对着同学，站着，然后向后倒，依赖别的同学来接住我们。
In this paper, the evolution of eddy structures in the backward-facing step flow was studied by using large eddy simulation.
本文对后台阶分离流动中涡结构的演变进行了大涡模拟，研究了流场结构的变化规律。
Backward-facing step flow is not only a typical example of complex separated flow of fluid dynamics, but also a class of common flow phenomena in many engineering fields.
后台阶流动不仅是流体力学中复杂分离流的一个典型例子，同时也是许多工程领域中一类常见的流动现象。
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