movable span 中文意思是什麼
movable span
解釋
活動孔-
It make the speaker get rid of bondageof mike and it expands the movable scope of speaker. it overcome the disadvantage of mike in. the life - span of equipment is more than five years. the equipment adopts hidden structure. when installed and debuged, you can use it with the power on and you need not manage it
它克服了手持話筒的不方便，領夾無線話筒經常更換電池串頻易損管理麻煩等缺陷，設備使用壽命超過5年，設備採用暗藏式調整結構，經安裝調試后，打開電源即用，無需專人管理。 -
The success of gonghe cable - stayed bridge construction control not only improves theoretics and technical level of cable - stayed bridge construction control, but also solves difficult issues of movable framework construction method for large span concrete cable - stayed bridge, and it also offers valuable experience for similar bridge construction in future
公和斜拉橋施工控制的成功，不僅提高了斜拉橋施工控制的理論和技術水平，解決了大跨度混凝土斜拉橋滑動模架法施工的難題，也為今後類似大跨度混凝土斜拉橋施工提供了寶貴的經驗。
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