resistance to inhalation

Objective: We have developed a novel method of cardiopulmonary resuscitation of active compression-decompression CPR combined with enhanced external counterpulsation plus the inspiratory impedance threshold valve (AEI-CPR),and researched the hemodynamic effect and determined the optimal counterpulsation phase through the experiment.

通过自身对照,比较辅以增强型体外反搏和吸气阻力阀的主动按压放松心肺复苏术(AEI-CPR)和辅以吸气阻力阀的主动按压放松心肺复苏术(AI-CPR)的血流动力学效果,并分t=210ms、255ms、300ms和345ms四个时相探讨辅以增强型体外反搏和吸气阻力阀的主动按压放松心肺复苏术的体外反搏最佳时相。

Aliquation and inspiration tend to occur during the production of heat resistant aluminium alloys due to manufacturing and environmental factors.

在耐热铝合金制备过程中,由于工艺以及环境因素,很容易产生偏析和吸气。

Experimental investigation of air-breathing valveless pulse detonation engine;

吸气式无阀脉冲爆震发动机试验研究

This paper addressed the nozzle effect on the performance of an air-breathing pulse det- onation engine(PDE)by multi-cycle detonation experiments.

分别对采用不同面积比、不同长径比的收敛喷管、扩张喷管和收扩喷管的吸气式脉冲爆震发动机(PDE)进行了多循环爆震试验研究,着重研究了不同工作频率下喷管面积比和长径比对吸气式PDE性能的影响。

Based on the test of the single centrifugal fan, suction characteristic of the centrifugal fan in series is carried out.

为此,在离心风机单机吸气性能试验的基础上,进行了离心风机串联吸气性能试验,得出了串联吸气性能与单机吸气性能的关系,以及适于串联的工况条件,为串联风机的参数选择提供了试验依据。

Removing of microdose N_2 in high purity D_2 by getter;

吸气剂法去除高纯D_2中微量N_2

Improvement of Zr-C Getters by Surface Activation;

激活工艺和表面气体压强对一种改性锆石墨吸气剂吸气性能的影响

Improvement of vacuum induction getter melting system;

吸气剂真空感应熔炼系统的改进