[机] 箱形大梁

词型变化：名词复数形式 : box girders

box girder的用法和样例：

例句

The successful alternative was the cast-in-place segmental prestressed concrete box girder.最后采用的方案是分段现浇的预应力混凝土箱形梁。
It is provided with a telescopic bracket.The box beam at the external side of the telescopic part of the bracket is inserted into the square hole in the main beam.其中，拖架具有可伸缩功能，是通过可伸缩部分外侧的箱形梁插入货台主梁的方孔中，选择箱形梁上孔的位置来实现的。

【近义词】

box beam箱形梁,匣形梁,箱形桨...

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发表于:2018-11-27 / 阅读(333) / 评论(0)

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发表于:2018-12-05 / 阅读(157) / 评论(0)

国家地理2007年

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图片1 图片2 图片3 图片4 图片5 图片6

发表于:2018-12-06 / 阅读(347) / 评论(0)

斯伯恩自然拼音（MP3+PDF）

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发表于:2018-12-18 / 阅读(126) / 评论(0)

113 The Box That Watch Found

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发表于:2018-12-31 / 阅读(135) / 评论(0)

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白领英语晨读

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经典英文歌曲

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图片1

发表于:2019-01-28 / 阅读(117) / 评论(0)

Let's chant Let's sing

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图片1

发表于:2019-01-28 / 阅读(125) / 评论(0)

Let's chant Let's sing

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图片1

发表于:2019-01-28 / 阅读(148) / 评论(0)

Let's chant Let's sing

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图片1

发表于:2019-01-28 / 阅读(171) / 评论(0)

Let's chant Let's sing

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发表于:2019-02-02 / 阅读(173) / 评论(0)

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音乐咖啡厅

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When I was a little girl, I found love in a box all because of a class assignment. On a Friday night I made an announcement at the dinner table. The words bubbled out in a torrent of excitement I could no longer contain. My teacher said we have to br

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发表于:2019-02-06 / 阅读(174) / 评论(0)

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actual gum in gasoline