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"The study of conductive liquid medium thermal conductivity test device" developed a transient hot wire thermal conductivity test device, with the characteristics of stability, small fluctuations, etc., can be used for rapid measurement of conductive liquid medium thermal conductivity, to fill the material heat Physical property key laboratory in the liquid phase thermal conductivity test blank.
Based on the research of portable blackbody metrology furnaces based on semiconductor technology, a portable blackbody metrology furnace device based on semiconductor technology was developed and developed. It features high emissivity, rapid temperature rise and cooling, and portability, and will provide more convenient and efficient services for on-site inspections.
The "Research on Portable Temperature and Humidity Standard Devices Based on Shunt Method" solves the problem of temperature and humidity parameters, develops a high-precision portable temperature and humidity standard device, and has the characteristics of simultaneous control and simultaneous measurement of temperature and humidity parameters in the same cavity. , It can be used as a new supporting equipment for laboratory metrology standards to improve the laboratory's online testing and calibration capabilities.
(Original title: 3 provincial scientific research projects passed the expert acceptance)
Three Measurement Devices Research Projects of Zhejiang Institute of Metrology Accepted Acceptance
[China Instrument Network Instrument R&D] Recently, Zhejiang Institute of Metrology assumed the "Research on conductive liquid medium thermal conductivity test device", "Study of portable blackbody metering furnace based on semiconductor technology", "Portable temperature and humidity standard device based on splitting method "Research" and other three scientific research projects passed the acceptance of the Provincial Bureau of Quality Supervision.
There are various types of back muscle fitness equipment, including but not limited to back tension machines, rowing machines, dumbbells and barbells, back stretchers, etc. These devices each have their own characteristics and can be used to exercise different muscle groups in the back, such as latissimus dorsi, trapezius, shoulder and back muscles, thereby comprehensively improving the strength and stability of the back.
1. Back tension machine: It can exercise different muscle groups on the back, such as latissimus dorsi, trapezius, etc. By adjusting the seat and handle, diversified tension training can be carried out at different angles and postures, effectively exercising the width and thickness of the back.
2. Rowing machine: It has a good training effect on the muscles of the back, shoulders, and arms. By adjusting the gear and posture, it can simulate rowing movements, strengthen the strength and endurance of the back and core muscles, and improve cardiovascular function.
3. Dumbbell and barbell exercises: Through different dumbbell and barbell movements, targeted exercises can be performed on the back muscles, such as dumbbell rowing, hard pulling, and flat rowing, to help enhance the strength and stability of the latissimus dorsi and trapezius muscles.
4. Back Stretcher: In addition to exercising the strength of the back muscles, stretching is also an important part of maintaining back health and maintaining correct posture. By doing stretching exercises, one can stretch the back muscles, relieve tension, and promote blood circulation, which helps prevent back pain and injuries.
When using these devices, it is important to maintain the correct posture and movements, and gradually increase the weight and difficulty to gradually improve the strength and endurance of the back muscles. By implementing a reasonable training plan and using it correctly, the strength, definition, and flexibility of the back can be effectively improved.