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影響風(fēng)幕機(jī)（風(fēng)簾機(jī)）效果的因素
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風(fēng)力等級(jí)表：自然影響因素
影響風(fēng)幕機(jī)效果的因素
風(fēng)力等級(jí)表：自然影響因素
Factors that influence the effects of an Air Curtain machine
Air flow scale : natural factors of influence
| Air flow scale | Explanation | ||
| 風(fēng)力等級(jí) | （KT） | （m/s） | 說明 |
| 1 | 0.5-1 | 0-0.3 | Flat calm-smoke curls straight upwards 穩(wěn)靜、煙火裊裊直升 |
| 2 | 1-4 | 0.3-1.6 | Smoke will weave in a direction 煙會(huì)編向 |
| 3 | 4-7 | 1.6-3.4 | Leaves will move 樹葉會(huì)動(dòng) |
| 4 | 7-11 | 3.4-5.5 | Branches will move and flags unfurl 樹枝會(huì)動(dòng)、旗幟會(huì)展開 |
| 5 | 14-17 | 5.5-8.0 | Sand and dust flies upwards , paper flies 沙塵飛揚(yáng)、紙會(huì)飛、小樹枝會(huì)搖 |
| 6 | 17-22 | 8.0-10 | Tree trunks sway and the surface of water ripples 樹桿搖動(dòng)、水面起波紋 |
劉宇航