Between each pocket there is a metal stick to make frame firm and strengthened, and avoid the breaking because of friction under the high air velocity.
每个滤袋间一金属条固定，增加强度，并防止滤袋于高风速时，因风切之摩擦力而破裂。
Between each pocket there is a metal stick to make frame firm and strengthened, and avoid the breaking because of friction under the high air velocity.
每个滤袋间一金属条固定，增加强度，并防止滤袋于高风速时，因风切之摩擦力而破裂。
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