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- Having a shell consisting of two hinged valves. 双瓣壳的有由两个开合的瓣组成贝壳的
- two-hinged portal frame bridge 双铰门式刚构桥
- A large leather suitcase that opens into two hinged compartments. 大旅行箱两半合拢带铰锁的大皮革箱
- Any of various devices with two hinged jaws, used for dredging or digging. 抓斗，挖斗任何一种具有两个铰接夹爪用来挖泥或铲土的设备
- A mollusk,such as an oyster or a clam,that has a shell consisting of two hinged valves. 双壳类一种软体动物，如牡蛎或蛤，有由两个开合的瓣组成贝壳的动物
- The bent frame system and portal frame system are often used for industrial mill buildings. 在工业厂房中,常用的结构体系有排架体系和刚架体系。
- A mollusk, such as an oyster or a clam, that has a shell consisting of two hinged valves. 双壳类一种软体动物，如牡蛎或蛤，有由两个开合的瓣组成贝壳的动物
- Dynamic characteristics of the portal frame are also identified from the WPT of low frequency signals. 低频的部分则可以进行门形构架的系统识别。
- An implement used to crack nuts, typically consisting of two hinged metal levers between which the nut is squeezed. 坚果钳子轧碎坚果的工具，多有两个有铰链的金属撬棒，坚果在中间被轧碎
- The portal frames are joined at the top by a cross member. 在门形框架顶部使用一个横撑相连。
- Derived from an effective combination of space truss and portal frame, a novel long-span structure named lattice portal frame (LPF) is put forward. 网格状门式剐架结构是结合了立体桁架结构和门式刚架结构受力优点而衍生的一种大跨度结构形式。
- The traditional three-dimensional potential theory was used to analyze the hydrodynamic forces and motion responses of two hinged bodies in waves. 摘要用三维势流理论分析了两个铰接的单体在波浪的作用下所受的水动力和各自的运动响应。
- General,X type bracing often be used in TOXON metal building system,but K type bracing and/or Portal frame bracing also be used it is required. 除了最为常用的X型支撑形式以外通晓建筑系统还可提供适合特殊要求的K型或门刚性支撑形式。
- The crane consists of four main parts, namely, the boxtype frame bridge, trolley traveling mechanism, crab and electric equipment. 本起重机由箱形桥架，大车运行机构，小车，电气设备四部分构成。
- In this setup,a stiff portal frame is adopted,piezoelectric ceramic micro-positioning worktable is employed,and the whole process can be observed by CCD device. 该装置采用龙门固定式结构,具有高精密的压电陶瓷微动工作台,可通过CCD观察整个加工过程;
- Numerical simulation analysis of steel portal frame with tapered members about temperature distribution under fire is carried out by finite element approach. 摘要采用有限元法对门式刚架结构中的变截面梁在局部火灾作用下的温度分布进行了数值模拟分析。
- Peripherin-gum good thixotropism, adequate viscosity, a certain amount of solid content and good frame bridge. 感平胶给有精良的触变性、不合的黏量、必定的固含量和精良的架桥性。
- The paper mainly studied the stress characteristic of the skew slant leg rigid frame bridge without abutment. 论文主要研究了斜交无桥台斜腿刚架桥的受力特性。
- Portal frame is a familiar type of structure in single-layer factorial building.A lot of factors must be taken into during building for its own characteristics. 门式刚架是目前单层工业厂房中一种常见的结构形式，由于门式刚架自身的特点，在安装时须考虑很多因素。
- A glass frame that is placed on the wooden frame, inside it there is a little frame covered by sponge, with two hinges at the lower parts of the little frame. 木座上置有一个大玻璃框架，玻璃框架中央有一个被海棉遮掩著的小窗，小窗下有铰位。
