When the pollen grains were continuously rehydrated in vitro, the exine and intine will separate from the protoplasm, respectively. 将成熟花粉水合后,其细胞质膨胀,挤压花粉壁使其外壁与内壁,接续与细胞质分离。
Of course you cannot contact openings because roller intine is rotating, and steam condensate drains and swivel joint is fixed not generated noise and damage to drainage pipes. 当然管口不能接触内壁,因为辊筒是旋转的,而冷凝水排水管和蒸汽旋转接头是固定不动的,否则会产生噪音和损坏排水管。