The door of the dining-room, which, as we have said, opened directly on the cathedral square, had formerly been ornamented with locks and bolts like the door of a prison.
餐室的门，我们已经说过，开出去便是天主堂前面的广场，从前是装了锁和铁闩的，正象一扇牢门。
The cup head square neck bolts are made on the multiple station cold header, and cut squeeze technology is used to get the square neck.
用多工位冷镦机生产半圆头方颈螺栓 ，对方颈部分的成形采用切挤成形工艺 ，用这种方法生产的产品 ，外形美观 ，质量稳定。
Based on the research of steel housing industry, a new outer-shell joint connecting cold-formed square tubular column and H-shaped steel beam with bolts was designed.
结合钢结构住宅产业化的研究，设计了冷弯方钢管与H型钢梁的螺栓连接外套管式节点。
Square flange heaters (boiler heaters) are suitable for constrained areas, square and round flanges are made of compact elements that are easily installed by tightening a series of bolts.
锅炉加热器适合用于限制区，方形和由小型加热元件制成的圆形法兰。
Round head low square neck carriage bolts.
半圆头低方颈螺栓。
Connecting bolts are arranged in the plugging conical points, and an anti-rotation key and an outer six-square sleeve which can realize the linkage are arranged on the screw bolt.
封堵内置有连接螺栓，螺栓上设有防转键及实现连动的外六方套。
Connecting bolts are arranged in the plugging conical points, and an anti-rotation key and an outer six-square sleeve which can realize the linkage are arranged on the screw bolt.
封堵内置有连接螺栓，螺栓上设有防转键及实现连动的外六方套。
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