cold air invading 冷空气入侵
According to path analysis upon the invading cold air on surface, the cold air paths causing heavy sand storm processes in Shaanxi are divided into the west, the northwest, and the north way.
根据地面冷空气入侵陕西的路径分析，将造成陕西强沙尘暴天气的冷空气路径分为西路、西北路、北路三条。
Proper air filtration Keeps dust from invading sensitive home or office electronics, audio visual equipment, refrigerators, laboratory equipment or computer equipment.
合适的空气过滤器可以阻止灰尘进入办公总部，视觉听觉设备，冰箱，实验室设备或计算机设备等敏感性房间。
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