弓弦式

弓弦式 [gōng xián shì]

1. ■ bow-string

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常用词组

1. ■ 弓弦式大梁 bow-string girder;

2. ■ 弓弦式梁 bow-string beam;

3. ■ 弓弦式桥 {土} bowstring bridge