Lead titanate nanorods with different length and diameter ratios have been successfully fabricated via hydrothermal method, PVA and PAA with different concentrations assisted as additives.
以不同浓度的聚乙烯醇(pva)和聚丙烯酸(PAA)作为添加剂,利用水热合成法成功制备出具有不同直径的钛酸铅纳米棒。
There are two types of low stiffness rubber bearings, natural rubber bearings and lead plug rubber bearings, total 18 specifications and 30 large diameter specimens are tested.
研究用低硬度橡胶隔震支座包括天然橡胶隔震支座及铅芯橡胶隔震支座两大类18种规格总计近30个大直径隔震支座。
In the complex soft layer contained large quantity of living rubbish, construction on sinking tubular pile with conventional method, will lead on to reduce tube diameter.
在含有大量生活垃圾形成的复杂软弱层中,按常规方法施工沉管桩,将造成严重的缩径现象。
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