题目内容
地下连续墙槽段采用工字钢接头时，焊接防绕流铁皮的目的是止水挡土。()
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______ outlines the Admiralty method of Harmonic tidal analysis for long and short observation periods plus a volume on datums for hydrographic surveys．
锚杆可用在软土层和高水位的碎石土、砂土层中。()
______ offers a detailed description of tidal theory and its application to the analysis and prediction of tides and tidal streams．
______ gives daily predictions of the times and heights of high and low waters for over 230 standard and 6，000 secondary ports in the world.
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