Supply Air Distribution: For typical operation of a laboratoryhood, the worker stands at the face of the hood and manipulates the apparatus in the hood.
送风分布：典型的通风柜操作，操作人员会站在通风柜正面，操作通风柜内的仪器设备。
2
Fume hood should be provided in each regular chemical analysis laboratory.
每个常规化学分析室都要有通风橱。
3
Each Fume Hood will be equipped with one cold water faucet and maximum to seven various gas faucet according to laboratory specialists' requirement.