It's the preferential material for agriculture greenhouse,some heat-insulation equipments and sound absorption barrier for expressway.

陽光板還具有很好的隔音性能，是高速公路等的首選材料最新欧美精品wwwtestc。

The removal of organic sulfur such as thiofuran , thioether and mercaptan is the main objective of dry desulfurization , and hydroconversion of organic sulfur and preventing the methanation side reaction are the technological difficulties of hydroconversion desulfurization. The combination of two-level conversion and two.1evel absorption is the preferential scheme for refined removal of high-concentration organic sulfur.

脫除噻吩又长又粗黄色视频、硫醚、硫醇類有機(jī)硫是干法脫硫的主要目標(biāo)白白视频在线，加氫轉(zhuǎn)化有機(jī)硫并防止發(fā)生甲烷化副反應(yīng)是加氫轉(zhuǎn)化脫硫的技術(shù)難點(diǎn)操b校园高清无码，組合式兩級(jí)轉(zhuǎn)化、兩級(jí)吸收是精脫高濃度有機(jī)硫的優(yōu)選方案黑人大战白妞系列AV。

Preferential dissolution of α phase for specimens processed less than 12 hrs were revealed by using ICP-MS (inductively coupled plasma-mass spectroscopy). Hydrides having precipitated in the α-phase at the near surface peeled off into the electrolyte, and thus resulted in reduced HUE for specimens having experienced longer charging periods. In order to increase HUE, the hydrogenation promoter, Na2S2O35H2O, was added into the electrolyte to see the effect on the hydrogen absorption.

感應(yīng)耦合電漿質(zhì)譜分析術(shù)(inductively coupled plasma-mass spectroscopy一级片操逼视频； ICP-MS)分析發(fā)現(xiàn)，滲氫前一階段（12小時(shí)）鋁元素有較明顯之溶釋現(xiàn)象午夜欧美一区二区，此一現(xiàn)象肇因於滲氫作用使近表面層α-相中析出之氫化物體積逐漸擴(kuò)大膨脹99riAV.cn，最后剝落而溶於硫酸水溶液，也因此造成長時(shí)間之滲氫效率未隨滲氫時(shí)間增加而增加麻豆国产原创视频在线。

pre-established limit：預(yù)先設(shè)立限度

(照射)劑量前 predose | 預(yù)先設(shè)立限度 pre-established limit | 優(yōu)先吸收 preferential absorption