The steel pin base also acts as a termite shield.
这些钢钉基座同时也是一块防蚁板。
Four of the 5 by 5 utility poles were connected to a steel pin base and form a structural column to the house.
其中四个5*5结构的线杆与一个有着钢钉的基座连在一起形成了房子的结构柱。
Improving the quality of flax spinning process, and obtaining good benefit by studying and using the round tail flat needle on the base of different properties of the round pin in spinning.
针对亚麻纺纱使用圆针所产生的性能差异而研制应用圆尾扁针，以提高亚麻纺纱工艺质量，获得了良好的综合效益。
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