In the past few years, with the development of building technology, the performance demand of construction materials is more, especially to the high strength and long perdurability of concrete.

在過去的十幾年中国产午夜三级片免费观看，隨著建筑技術(shù)的發(fā)展日韩孕妇自拍视频直播在线观看网站，人們對結(jié)構(gòu)材料的要求越來越高十八岁在线观看的黄片，尤其是對混凝土的高強(qiáng)性和耐久性的要求越來越高美国一级黄片的黄色美国的现在能放出来的。

The SWNT-based capacitors also have good charge/discharge reversibility and cycling perdurability.

基于SWNT的超級電容器也有著良好的充放電可逆性和循環(huán)穩(wěn)定性30分钟黄色视频永久免费的网站。

The security and perdurability of bridge are directly related to people's life and wealth, therefore a predicting and warning and timely maintaining system based on identifying the modal parameters and inspecting damages of the bridge structures is developed which can help to eliminate hidden troubles and avoid the occurrences of catastrophic accidents.

模態(tài)試驗是橋梁結(jié)構(gòu)竣工試驗免费A级毛片aV无、健康監(jiān)測等方面的重要組成部分，而模態(tài)試驗分析的最終目標(biāo)是識別出系統(tǒng)的模態(tài)參數(shù)国产91ⅴ在线精品免费观看，為橋梁結(jié)構(gòu)的振動特性分析一级二级毛片18岁禁看视频黄,、健康監(jiān)測等提供依據(jù)，因此欧洲性交网，橋梁結(jié)構(gòu)的模態(tài)參數(shù)識別是模態(tài)分析的重要內(nèi)容黄大片视频。

On the base of these studies, TiO_2 was added to the copolymer resin solution to improve the anti- ultraviolet function. As a result, siloxane-acrylate coatings with good water-proofness, excellent perdurability and high heat resistance were prepared.

在此基礎(chǔ)上，向共聚溶液中添加二氧化鈦作為紫外光吸收劑亚洲精品国产日本能看黄网站，制得了憎水性好天天透天天要、耐候性優(yōu)良、熱穩(wěn)定性高性爱无码视频在线观看、有機(jī)硅改性丙烯酸酯涂料日韩视频自拍第二页在线播放网站。

The existence of hydrogen bond within or between the molecules of pigment can enhance the perdurability, light fastness and weather resistance.

有機(jī)顏料發(fā)色母體最主要的是偶氮和酞菁兩大類(分別為50%和25%)，其余25%的顏料屬于雜環(huán)的發(fā)色體：喹吖啶酮超碰在线播、異吲哚啉與異吲哚啉酮黄片一级无码视频在线、苝、喹酞酮、二噁嗪啪啪啪网战、吡咯并吡咯二酮福利微拍日韩精品、金屬絡(luò)合顏料、靛族和稠環(huán)酮顏料(如：蒽醌久久黄色大片视频免费无码、黃蒽酮日韩性视频网站、皮蒽酮等)。

perdurability：延續(xù)時間

percussive-rotary drilling 沖擊旋轉(zhuǎn)鉆井 | perdurability 延續(xù)時間 | peremptory 絕對的;強(qiáng)制的;斷然的

perdurability：持久性 延續(xù)時間

perdue /隱藏的/看不見的/敢死隊員/ | perdurability /持久性/延續(xù)時間/ | perdurable /永久的/耐久的/

perdurability：延續(xù)時間,持久性

percolation 滲濾,滲透 | perdurability 延續(xù)時間,持久性 | perfect gas 理想氣體

piston rotation perdurability：活塞下降速度

piston prover,活塞校準(zhǔn)器 | piston rotation perdurability,活塞下降速度 | piston with weight carrier,帶有底盤裝置的活塞