Results indicate that there is a cold advection in the surface layer and a warm advection at the higher level near the stationary front.
结果表明：静止锋附近的近地面层为冷平流，再往上为暖平流。
The major systems come from the shear line of low-layer, the low trough of upper air and the ground stationary front.
主要影响系统来自低层切变线、高空低槽和地面静止锋；
Stationary blade structure:alloy steel stationary blade to adjust hammer space, can break the circulation layer effectively;
定刀结构：合金钢定刀上下调整锤片间隙，有效的破坏环流层；
Stationary blade structure:alloy steel stationary blade to adjust hammer space, can break the circulation layer effectively;
定刀结构：合金钢定刀上下调整锤片间隙，有效的破坏环流层；
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