This paper introduced research background, testing principle and device performance of KZNJ-1 respirator Efficiency tester in detail. Experiment results showed that the performance parameters of the tester were all identical to or better than the requirements of national standards-GB 19083 and GB 2626.
The ones that unloaded a ship in the continuous bulk cargo are when fetches the material, vertical sending, link that the level sends,etc. , The key technological link fetches the course of the material, The quality of fetching the device performance of the material is to influence and restrict the essential influence factors of the ability and efficiency of the unloading a ship machine in succession of bulk cargo.
Based on the performance testing of an oxygen-rich membrane device the authors give a comprehensive review concerning the effect of oxygen-rich concentration and oxygen-rich air production rate under various operating regimes on the oxygen-rich membrane device performance and operating conditions(pressure ratio,air supply rate and operating temperature). Discussed are some problems during the practical application of such devices.
The paper brings forward a real-time communication system based on 485 Bus and composed of centre host computer and multi single chip computer control system that is a part of the electric device performance detecting system,and the program design method of the real-time communication between PC and multi single chip computer system is mainly introduced,realizing the PC′s real-time control and management of the remote terminal units.
(2) The effects of the topography nearby the device and the main design parameters of the device on its performance were examined through 16 case studies.
Someprincipal parameters are given Experimental results show that its performance ingood in the current region up to 260kA, and its rise-time is about 2 ns.
The important functions of recoil system for guns were analyzed, and the necessity and significance of quantitative evaluation of its performance were demonstrated.
The results of the experiment show that it is a type of perfect mine high-voltage vacuum distribution equipment,which is of high quality in its performance,protection and use.
This paper introduces the design idea, device function, part of circuits and somethingabout protection tests of the teaching and test device of the MCE-98 Ⅰ type microprocessorrelay protection.
The two years'test indi-cated that the instrument is reliable. The result of calibration for α-Al_2O_3 shows that itsprecision is±0.34% and accuracy±0.9%.
Practice(indicates) that the application performs well and is of high reliability with a linearity of 0.02%,a resolution of 0.002 mm and a response speed of 10 m/s.
Its performance was tested and compared with that of the pneumatic nebulization system.
For strong correlation signal, its performance is superior to those of the NLMS algorithm and DCR-LMS algorithm.
Results indicate that the packet loss ratio in HOBS is much less than that in optical burst switching(OBS) and its performance depends on some parameters such as the packet proportion, the electronic buffer size and the processing speed in the node.
In order to predict and improve the performance of networked storage systems, this paper explored the relationship between the system I/O response time and its performance factors by quantitative analytical method.
However, for a multicode system, its performance will be degraded by ICI.
The model was validated in five mongrel dogs: (1) Catheters and flow measuring device function over several months.
Use of antiarrhythmic drugs in the ICD patient population not only can cause potentially serious side effects but can also interact or interfere with the ICD device function.
The main principles from published policy statements are summarized, emphasizing that the physician remains responsible for the patient's overall care as well as device function and programming.
This descriptive study aimed to determine whether the use of electrodiagnosis during reprogramming could provide objective data on device function in these patients and help direct therapy.
Specifically, we distinguish between function as effect on the environment, and a device-centred view of device function.
This paper describes in detail the research process of chopper control system for Beijing testing 1200kw electrical cars. The performance and the principal parameters of chopper control equipment are given. Consideration is attended to the working conditions of chopper with reverse conducting thyristors. Concrete methods for discourage of commutating dynamical conditions are also presented.
The information in this article covers the investigation, fabrication and testing of an inertial profilometer system, developed for use on the railway track test car. The principle of inertia method and its application to the profilometer are demonstrated and described, including the details of the mechanical configuration and the electronic implementation used. The profilometer is used to measure track profile at speed, particularly at high speed.Both laboratory and field tests were conducted to evaluate the...
The information in this article covers the investigation, fabrication and testing of an inertial profilometer system, developed for use on the railway track test car. The principle of inertia method and its application to the profilometer are demonstrated and described, including the details of the mechanical configuration and the electronic implementation used. The profilometer is used to measure track profile at speed, particularly at high speed.Both laboratory and field tests were conducted to evaluate the performance of the profilometer system. Comparisons are made between the profilometer measurements at speed and the level instrument measurements under the wheel loading of the track test car in the same section, and between the successive measurements of profilometer at fast passenger train speed in the same trunk line section. The results are satisfactory. At 160km/hr. test run, data are also normally recorded.
装置性能
device performance
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