单弦杆平板网架由于无下弦杆，因而具有平面外抗弯刚度较低的特点。
The single-chorded plane space truss have the low flexural rigidity out of plane because of lacking bottom chord.
只有这样我们才能实现个人的梦想，才能成为一个美利坚大家庭。 独木不成林，单弦不成音。
We are one people, all of us pledging allegiance to the stars and stripes, all of us defending the United States of America.
只有这样我们才能实现个人的梦想，才能成为一个美利坚大家庭。 独木不成林，单弦不成音。
We are one people, all of us pledging allegiance to the stars and stripes, all of us defending the United States of America.
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