B:Do you want to send them by ordinary mail or by air mail?

你想寄普通信還是寄航空信？

Do want to mail it by air or by ordinary mail?

您是要寄空郵還是平郵天天插天天狠天天透伊人？

A: Do want to mail it by air or by ordinary mail?

您是要寄空郵還是平郵三级黄色黄页网站？

The phase-changing material supplies heat for indoor heating by heat conduction upwards and convection current, meanwhile heat supply of the phase-changing material is adjusted by air duct and indoor aeration speed, which further regulates and controls heat supply speed.

相變材料通過向上導(dǎo)熱和對流為室內(nèi)供暖提供基礎(chǔ)供暖量，同時通過調(diào)控空氣通道與室內(nèi)的換氣速率來調(diào)整相變材料的供暖量AV无码永久免费网站，起到進(jìn)一步調(diào)控供暖速率的作用一区精品自拍偷拍。

Did he ship the goods by train or by air?

他是用火車還是用飛機(jī)運(yùn)送那批貨物的？

Synthesis of mesitylene by catalytic alkylation of mixed C9 arenes and isobutene;2. Synthesis of trimesic from liquid phase oxidation of mesitylene by air

能使感光材料增加感光性的一類染料国内主播直播在线观看。1873年發(fā)現(xiàn)在溴化銀乳劑中加入菁染料后欧美亚洲精品s区，可使乳劑在染料所吸收的光譜區(qū)域中產(chǎn)生新的感光性，從此菁染料在黑白膠卷国产免费久久久久久久精品、彩色膠卷及紅外膠卷等感光材料工業(yè)先后獲得廣泛應(yīng)用欧美肉视频网站。

It was observated that the movement of oil drop impacted by air molecule in Millikan experiment. Displacement distribution and measurement error functions accord with gaussian distribution by studying of histogram.

用密立根實驗裝置，觀測油滴在空氣分子撞擊下運(yùn)動黄片一级毛片国产，通過直方圖研究說明位移分布函數(shù)φ符合正態(tài)分布强奷伦奷视频在线观看，測量誤差分布也服從正態(tài)分布。

One of Mexicos hottest bass fishing lake is known as Agua Milpa, which opened in the fall of 1997.the 70,000 acre lake, one of the most easy to get to of Mexicos hot bass fishing lake can get to by paved road in 3 hours, either your heading from Guadalajara or Puerto Vallarta or by air to Tepic, Nayarit then a short 45 minute ride to the lodge.

低音湖捕魚mexicos熱門之一欧美aaaaaaaa片，被稱為阿瓜支配幸爱五月天、6000年秋季有1997萬英畝湖泊其中最搶手的地?zé)岬鸵鬽exicos湖捕魚，可在3個小時的路鋪好自偷自拍亚洲一区二区，無論你來自瓜達(dá)拉哈拉或標(biāo)題或空特皮克巴亞爾塔欧美性爱亚洲色图、短短45分鐘納亞然后乘車前往加州鱸魚lodge.the湖魚捕撈到僻靜從秋天97。

For the same coal, the oxidation by nitric acid is deeper than that by air.

對同一煤種而言97国产乱伦无码，HNO3的氧化程度要高于空氣氧化的www.zipai。

It was shown that not only pore surface chemistry but also the pore structure of samples activated by air were different from those by traditional steam, carbon dioxide and potassium hydroxide activation.

研究結(jié)果表明，所制備的樣品不僅具有特殊的表面結(jié)構(gòu)最近中文字幕免费大全下载，同時其孔隙結(jié)構(gòu)也與其它方法所制備的ACF有較大差異无码3p；樣品對低濃度下的極性分子如水蒸氣有較好的吸附選擇性。