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- The results have an important reference value for selecting primary nozzle types of exhaust ejector systems. 试验结果对排气引射系统主喷管选型设计有重要的参考价值。
- Dispersity of gas flow can be enhanced and afterburning efficiency can be improved by increasing primary nozzle numbers and nozzle expansion ratio. 增加一次喷嘴的数目和加大喷嘴的扩张比增加了燃气的分散性,提高了补燃效率。
- Rocket ejector with strut characteristic was adopted.Multi primary nozzle was used to enhance mixing and atomized-spray injector was used to obtain better spray. 引射火箭采用二元支板结构,燃气发生器采用多个喷管以加强混合,二次燃料喷嘴为小流量直流自击式喷嘴。
- Hot-firing tests and numerical simulation were carded out on a 3-cell GH2/GO2 linear aerospike nozzle engine with round-to-rectangle primary nozzles. 摘要以气氢/气氧为推进剂,对三单元直排塞式喷管发动机进行了热试实验和数值模拟研究。
- Angle properties of the primary nozzle of plug nozzle 塞式喷管主喷管角度特性
- The disease is still in its primary stage. 这疾病仍然在初发阶段。
- An Experimental Research on the Exhaust Ejector-Mixer System with Tabs on a Rectangular Primary Nozzle 矩形主喷管带小突片的排气引射混合系统的试验研究
- Experimental Studies on Plug Nozzle Performance by Changing the Angle of the Primary Nozzle 主喷管倾角影响塞式喷管性能的实验研究
- The little boy left primary school at eleven. 这个小男孩十一岁时小学毕业。
- Sure. We are friends since primary school. 当然,我们从小学就是朋友了。
- I started primary school when I was 5 years old. 我五岁时开始读小学。
- A primary cause of Tom's failure is his laziness. 懒惰是汤姆失败的主要原因之一。
- Primary school teachers use a lot of visual aids. 小学教师使用大量的视觉教具。
- Love and hatred are primary emotions. 爱和恨是基本的情感。
- The Democratic primary was held this month. 民主党候选人初选於本月举行。
- Primary education comes under the umbrella of local government. 小学教育受地方政府的保护。
- He only accepted the primary education off and on in his childhood. 他小时候只断断续续地接受过初等教育。
- The primary reason for advertising is to sell more goods. 做广告的根本目的是要多出售货物。
- Collins was nosed out by his opponent in the primary. 柯林斯在初选中就被他的对手击败了。
- Not derived from something else; primary or basic. 基本的不是从它物派生的; 原本的或基本的