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本实用新型公开了一种冷藏冷冻箱防凝护套,包括护套底,所述护套底上端固定连接有下螺纹,所述下螺纹上端固定连接有护套扣,所述护套扣上端固定连接有上螺纹,所述上螺纹上端固定连接有衔接层,所述衔接层上端固定连接有护套顶,所述护套顶一侧设有切角,所述护套顶上端中心位置内部设有剖开孔,所述剖开孔下端设有剖开小...
本实用新型公开了一种可实现多维共享的翻页书打印设备,包括支撑台,打印机的出口端设有滑道,滑道的两侧设有开口朝向内侧的第二滑槽,两个第二电机的输出端设有贯穿第二滑槽内部的第二丝杆,两个第二丝杆螺母螺母的内侧均设有第二连接块,滑板内设有若干个相片放置槽,第二电动伸缩杆的输出端设有朝向相片放置槽设置的...
椅子形成与发展有着悠久历史,在整个椅子发展史上,椅子有着特定符号特征与文化内涵。本文对木制餐椅、办公椅等坐椅的设计、结构、品质要求进行简要分析。 1 坐椅设计坐... 龚小来 - 《家具》 被引量: 1发表: 2005年 泽被巴蜀大地 情系凉山儿童——"大画中国"奇特乐爱心文化行纪实 2015年12月11日,由中国人民对...
PURPOSE:To provide a system form movable even with a strut and a floor plate existing above a construction part and adjustable in height according to the height of the construction part so as to improve the efficiency of form assembling-disassembling work to a great extent. CONSTITUTION:A system...
An apparatus and method for automatic gain control in spread-spectrum communications includes an automatic gain control apparatus (400) for a spread-spectrum receiver, including a received signal strength indicator (416), an analog amplifier (418) in signal communication with the received signal streng...
摘要: The quality evaluation of the bridge engineering is one of the important component elements in the checking process of bridge construction. In this paper the fuzzy mathematics method is introduced into the comprehensive evaluation of bridge quality and the practicability and effectiveness of this...
The major histocompatibility complex (MHC) on chromosome 6p21 is one of the most single-nucleotide polymorphism (SNP)-dense regions of the human genome and a prime model for the study and understanding of conserved sequence polymorphisms and structural diversity of ancestral haplotypes/conserved extende...