结合煤炭行业液压支架主体机构的设计，介绍了几种近似直线机构的简易设计方法。
According to the body mechanism design of power supports in coal business, this paper introduces some simple design methods of approximate straight line mechanism.
支架主体（1）的上端连接有颊侧面固定翼（2），支架主体（1）的下端连接有下颌骨固定翼（3）。
The upper end of the bracket body (1) is connected with a cheek side fixed wing (2), and the lower end of the bracket body (1) is connected with a mandible fixed wing (3).
照片的主体是落满灰尘的三只支架之一，支架，能帮助飞船顺利着落岩石遍布，及其干燥的火星表面。
The photo shows one of three dust-covered footpads of the craft resting on Mars's dry, rock-littered surface.
巨大的A形支架作为结构主体贯穿了大堂及所有空中花园，这使得模型制作公司老板相当的恼火。
The huge A-shape main structure goes through the hall and the sky garden. It really gets the boss of the modeling company pissed off.
多层模板支撑体系是一个模板支架与主体结构之间相互作用、共同工作的支承体系。
The multistory form strut system is a supporting system of interaction and cooperation between the form strut and major structure.
每个后支架有两个砂芯，铸件主体在下型。
Each rear bracket has two sand bore, the casting body molding is at the lower position.
每个后支架有两个砂芯，铸件主体在下型。
Each rear bracket has two sand bore, the casting body molding is at the lower position.
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