Summary: The Tea Research Institute of the Chinese Academy of Agricultural Sciences is an institution affiliated with the ministry. It is located in Xihu District, Hangzhou City, and is mainly engaged in scientific research related to the tea industry, as well as scientific and technological services and skills training. The disciplines of our institute cover tea germplasm resources and genetic breeding, tea plant cultivation and physiological ecology, tea processing, tea quality and safety, and industrial economy, involving all aspects before, during and after tea production. Relying on our institute, platforms such as the National Engineering Technology Research Center for the Tea Industry, the National Tea Plant Improvement Center, the Industrial Technology R & D Center of the National Tea Industry Technology System, and the Key Laboratory of Tea Plant Biology and Resource Utilization of the Ministry of Agriculture have been established, with advanced and complete scientific research facilities and equipment. Our institute has a number of well-known academic leaders at home and abroad, including 1 academician of the Chinese Academy of Engineering, 5 national and provincial-level experts, 23 senior experts, 42 deputy senior experts, and 40 supervisors for masters and doctoral students.
Keywords: Anechoic chambers, soundproof chambers, semi-anechoic chambers, fully anechoic chambers, acoustic laboratories, fully anechoic rooms, anechoic rooms, semi-anechoic rooms.
I. Procurement Content
Semi-anechoic chamber
II. Basis Standards
(1) GB/T 6882 Acoustics - Determination of sound power level of noise sources - Precision methods for anechoic and hemi-anechoic rooms;
(2) ISO 3745 Acoustics - Determination of sound power level of noise sources - Precision methods for anechoic and hemi-anechoic rooms.
III. Main Indicators and Project Contents (such as effective space and background noise)
The size and precision of the semi-anechoic chamber after construction meet the requirements of the contract agreed upon by both parties.
When there is no abnormal low-frequency noise source interference in the external environment (i.e., the surrounding environment), the indoor background noise of the semi-anechoic chamber is Lgn(A) ≤ 15 dB(A).
