公车上双乳被两男人夹击电影_国产一级露脸AV毛片_波多野结衣作品番号_葵司精品一区二区三区视频_国产三级自拍亚洲一级黄色_在线欧美v片免费观看视频_少妇淫交视频免费观看_成日本片免费AⅤ在线观看_女人奶水授乳MILKHD_精品高清日本欧美

鐵路護(hù)欄網(wǎng)是相對(duì)常見(jiàn)的防護(hù)網(wǎng)，尤其是在高速鐵路上。大型高速鐵路通車時(shí)，兩側(cè)的鐵路護(hù)欄網(wǎng)起著巨大的作用。在隔離，保護(hù)和安全應(yīng)對(duì)各種緊急情況的過(guò)程中，鐵路護(hù)欄網(wǎng)發(fā)揮了巨大的幫助作用。
Railway fence is a relatively common protective net, especially on high-speed railway. When the large-scale high-speed railway is opened to traffic, the railway fence on both sides plays an important role. In the process of isolation, protection and safety response to various emergencies, railway fence has played a great role in helping.
鐵路護(hù)欄網(wǎng)的建設(shè)也是一個(gè)巨大的工程。在早期階段，有必要對(duì)施工路段進(jìn)行現(xiàn)場(chǎng)勘測(cè)，并對(duì)山區(qū)和坡度路段進(jìn)行勘察，以確保鐵路護(hù)欄網(wǎng)施工的安全。另外，在完成測(cè)繪工作之后，下一步是在現(xiàn)場(chǎng)安裝并鋪設(shè)，著重于鐵路護(hù)欄網(wǎng)支架的固定，因?yàn)?span style="color:#333333;">液壓鋼壩  這是承載兩個(gè)相鄰護(hù)欄網(wǎng)的重要環(huán)節(jié)。安裝鐵路護(hù)欄網(wǎng)時(shí)，請(qǐng)注意以下三點(diǎn)：
The construction of railway fence is also a huge project. In the early stage, it is necessary to carry out on-the-spot investigation to the construction section, and to investigate the mountainous area and the slope section, so as to ensure the safety of the railway fence construction. In addition, after the completion of the surveying and mapping work, the next step is to install and lay on the site, focusing on the fixing of the rail fence bracket, because it is an important link to carry two adjacent guardrail nets. When installing railway guardrail, please pay attention to the following three points: