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laboursome adj.吃力的。

labra

Those of multi - span , middle - length ( about 25 - 40 metres ) are of large percentage among advanced bridges . simply - supported girder bridges with continuous decks are inferior to those of continuous girders because their decks crack easily . owing to the complex construction of continuous girder bridges , which is laboursome and time - consuming , people have been thinking about an approach to combining the advantages of the two so as to speed up the building and reduce the work procedures 在高等級公路橋梁中,多孔中等跨徑(跨徑在25 40米左右)的橋梁占很大的比重,橋面連續的簡支梁結構體系由于存在橋面容易開裂等缺點而在與連續梁結構體系的競爭中常常處于下風。

Now there are many inspecting method of compound foundation bearing capacity , but most of them are base on the static load test or the original place test to obtain the compound foundation bearing capacity . these methods are time - consuming and laboursome , and they ca n ' t give the compound foundation a wide - ranging , integral inspection and evaluation 目前,關于復合地基承載力的檢測方法有很多,但大多采用靜載試驗或原位測試方法獲取復合地基承載力,費時費力,而且不能進行大面積、整體的檢測和評價。

Hole excavating work to benefit sling passing is an essential procedure for wreck salvaging . at present the task is performed by divers with the mud penetrator , which is laboursome , inefficient and hazardous 攻打千斤洞是沉船打撈作業中的一項關鍵工序,即在沉船底部清理出一條穿引抬船用鋼纜的通道。