In the current decoration of 100-level clean room due to space constraints usually use horizontal flow, horizontal laminar flow clean room air flow direction is inconsistent with the gravity settlement direction of dust particles, so the horizontal laminar flow clean room section wind speed should be greater than the vertical laminar flow clean room section wind speed, generally not less than 0.3m/s, otherwise there will be dust particles settling phenomenon.
在现在装修百级洁净室中由于空间受限通常采用水平流，水平层流洁净室的气流流向与尘粒的重力沉降方向不一致，因此水平层流洁净室的断面风速应大于垂直层流洁净室的断面风速，一般不得小于0.3m/s，否则将出现尘粒的沉降现象。
The cleanliness of the horizontal laminar flow clean room gradually decreases along the flow direction, it is generally believed that the work area 0.6~1.3m from the ground is a high degree of cleanliness, and the cleanliness of the work area is 100, so it is suitable for a variety of cleanliness requirements of the process.
水平层流洁净室的洁净度沿气流流向逐渐降低，一般认为离地0.6~1.3m的工作区内是洁净度较高的工作带，工作区其洁净度为100 级，因此适用于多种洁净度要求的工艺过程。
In this case, according to the characteristics of the dust concentration distribution in the horizontal laminar flow clean room, the processes with less dust and high cleanliness requirements can be arranged in the high-level clean area, while the processes with more pollution and low cleanliness requirements can be arranged near the return air wall, and the other processes can be arranged between the two.
在这种情况下，可根据水平层流洁净室含尘浓度分布上的特点将发尘量少和洁净度要求高的工序布置在高级别洁净区，而将污染较多和洁净度要求较低的工序布置在回风墙附近，其他工序则可布置在两者之间。
