Often, these manipulations are carried out in closed chambers at carefully maintained pressures and temperatures. They can also involve hazardous materials.
通常这种工作，都在控压和控温完全密闭实验室中进行，或者牵涉到非常危险的物质。
These chambers were built for researching on the influence of physical and chemical factors in closed-environments on human and animal physiological functions.
本舱群是为研究密闭环境条件对人体、动物生理机能的物理和化学因素的影响而建造。
These chambers were built for researching on the influence of physical and chemical factors in closed-environments on human and animal physiological functions.
本舱群是为研究密闭环境条件对人体、动物生理机能的物理和化学因素的影响而建造。
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