A disadvantage of the cascade configuration is that the signal may pass through more than one switch contact to the device under test, causing higher losses in the signal.
级联配置的一个缺点是信号要经过多个开关触点才能到达被测装置,会造成信号的损耗更高。
The results of field test showed that adopting cascade geophone pattern can be results of good continuation of phase, enhanced amplitude and high signal-to-noise ratio on the records.
实际野外试验结果表明,采用串联检波器串的方式所得记录的相位连续性好、振幅增强,信噪比较高。
For validating the aerodynamic characteristics of LP turbine guide vane, the wind blow was carried out for test cascade of the guide vane on the low speed annular wind tunnel.
为了考查低压涡轮导向器的气动性能,在低速环形叶栅风洞上对导向器的实验叶栅进行了吹风实验。
The computative results approach the test results of cascade.
计算结果同叶栅吹风试验结果很好地吻合。
An analysis of the result of the test shows that too large or too small relative cascade pitch may cause bad distribution of fluid velocity inside the cascades.
对测试结果的分析表明,叶栅密度过大或过小均会使叶栅内流体的速度分布状态变差。
Design for a cascade refrigeration system is optimized with respect to the life and reliability of the test facility.
为了满足试验设备的长寿命性能,对复叠制冷系统进行了可靠性设计。
On the slot suction test rig of a humid-air plane-cascade, an experimental study was conducted of the water removal performance of the suction slots on hollow stationary blades of a steam turbine.
在湿空气平面叶栅缝隙抽吸试验装置上,对汽轮机空心静叶抽吸缝隙的去水性能进行了试验研究。
The test results have shown that the flow losses of cascades with optimized load distribution are significantly reduced in comparison with the original cascade.
结果表明:优化载荷分布的叶栅和原叶栅相比,总流动损失明显降低。
Series of assistant equipments have also been developed for measuring water-droplets sizes and their distributions in front of and behind the test (cascade) by using optics method.
还研制了用光学方法测量叶栅前后有关水滴尺寸及其分布的一系列辅助装置。
A new comparative test approach is provided for the thermal fatigue life experiments of turbine blade under thermal shock. The tested blades and reference blades were mounted in a common vane cascade.
针对涡轮叶片的热冲击疲劳寿命实验,提出了一种新的对比实验方案和措施:将实验叶片和参照叶片组合在同一组试验叶栅上,并且在试验过程中定期对调两种叶片的安装位置。
The cascade refrigeration system can be applied to the thermal vacuum test facility of spac…
复叠制冷系统可以应用于卫星部组件热真空试验设备、高低温试验箱以及医用低温箱等。
The cascade refrigeration system can be applied to the thermal vacuum test facility of spac…
复叠制冷系统可以应用于卫星部组件热真空试验设备、高低温试验箱以及医用低温箱等。
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