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1.According to the situation of high output high efficiency face zone of fully mechanized for subleved caving associated equipment ,fire damp prevention and cure,ground behaviour,face zone ranking and roadway layout,this paper designs abut support of face zone,manages abut roof in united support method of combining monomer hydraulic prop and type-πmetal cap, cancels the abut holder ,meets the needs of safety production, and improves the level of high output high efficiency in face zone in further step.
根据王庄煤矿高产高效综放工作面设备配套、瓦斯治理、矿压显现、工作面回采顺序及巷道布置等情况,对工作面的端头支护进行设计,采用单体液压支柱加金属π型顶梁的联合支护方式管理端头顶板,取消了端头架,满足了安全生产需要,进一步提高了工作面的高产高效水平。收藏指正
2.The histology of the prop root apices (aerial) of 4 genera of the Rhizophoraceae was characterized markedly by columnar meristematic area, columella and suberized sheath of root cap.
红树科（Rhizophoraceae）4 属的支柱根根端，以显著的柱状分生组织区、根冠柱、栓质化的根冠为特征。收藏指正
3.The prop root apices (aerial) of Acanthus and Avicennia as well as pneumatophore apices of Avicennia and Sonneratia possessed short columella and thin suberized sheath, or showed growth layer in the phellem of root cap. Most of the mangrove plants started procambial activity very early.
老鼠?属（Acanthus）、海榄雌属（Avicennia）的支柱根和海榄雌属、海桑属（Sonneratia）的出水通气根根端都有短的根冠柱，薄的栓质化根冠或根冠的木栓层具有生长层。收藏指正
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