| 3 | 1/1 | 返回列表 |
| 查看: 379 | 回復(fù): 2 | ||
xfgzju木蟲 (正式寫手)
|
[求助]
請(qǐng)牛人把下面的換一個(gè)表達(dá)方式
|
| Four limestone samples were used to evaluate the protective ability of polymers against acid rain attack. One sample was left untreated as blank. Another three samples were treated on all faces with HBA/D230/TiO2 polymers. Samples were sprayed with H2SO4 solution (pH 4.0) by periodic spraying as we designed before [12]. In the simulation process, the samples were placed at a 45° angle in a glass funnel. The volumetric flow rate of solution was adjusted at 10 mL•min-1 and the stone blocks were carefully moved every 10 min in order to spray acidic solution on entire available surface of the samples. The total amount of solution volume for each spray was 1000 mL, and then the samples were dried in the air at room temperature for one day in order to achieve the effect of drying-wetting cycles. Each spraying was formulated by a new sulfuric acid solution (pH 4.0). The periodic spraying was repeated 10 times. The run-off solution was collected at the end of each experiment. |
銅蟲 (著名寫手)
|
把下面的換一個(gè)表達(dá)方式 The tapes were stuck to the stone surface and smoothed with gentle finger pressure, and were then removed by pulling at an angle of 90°, and weighed on a balance with sensitivity of 0.0001 g. The peeled off material was determined as the difference between the weight of the tape after removal from the surface and the weight of the clean tape before application. Stick the tapes on the stone surface and smooth them gently, then remove them by pulling from an angle of 90°, and weigh them accurately to 0.0001 g. The weitht of the peeled off material is the weight of the tape after removal from the surface minus that of the clean tape before application. |
銅蟲 (著名寫手)
| 3 | 1/1 | 返回列表 |
| 最具人氣熱帖推薦 [查看全部] | 作者 | 回/看 | 最后發(fā)表 | |
|---|---|---|---|---|
|
[考研] 306求調(diào)劑 +9 | chuanzhu川燭 2026-03-18 | 9/450 |
|
|---|---|---|---|---|
|
[考研] 291求調(diào)劑 +5 | 孅華 2026-03-22 | 5/250 |
|
|
[考研] 0854電子信息求調(diào)劑 +3 | α____ 2026-03-22 | 3/150 |
|
|
[考研] 328求調(diào)劑,英語(yǔ)六級(jí)551,有科研經(jīng)歷 +6 | 生物工程調(diào)劑 2026-03-17 | 10/500 |
|
|
[考研] 求調(diào)劑 +5 | Zhangbod 2026-03-21 | 7/350 |
|
|
[考研] 354求調(diào)劑 +7 | Tyoumou 2026-03-18 | 10/500 |
|
|
[考研] 一志愿華中科技大學(xué)071000,求調(diào)劑 +4 | 沿岸有貝殼6 2026-03-21 | 4/200 |
|
|
[考研] 廣西大學(xué)材料導(dǎo)師推薦 +3 | 夏夏夏小正 2026-03-17 | 5/250 |
|
|
[考研] 266求調(diào)劑 +3 | 哇呼哼呼哼 2026-03-20 | 3/150 |
|
|
[考研] 求調(diào)劑 +3 | .m.. 2026-03-21 | 4/200 |
|
|
[考研] 279求調(diào)劑 +5 | 紅衣隱官 2026-03-21 | 5/250 |
|
|
[考研] 330求調(diào)劑0854 +3 | assdll 2026-03-21 | 3/150 |
|
|
[考研] 材料 336 求調(diào)劑 +3 | An@. 2026-03-18 | 4/200 |
|
|
[考研] 華東師范大學(xué)-071000生物學(xué)-293分-求調(diào)劑 +3 | 研究生何瑤明 2026-03-18 | 3/150 |
|
|
[考研] 304求調(diào)劑 +6 | 曼殊2266 2026-03-18 | 6/300 |
|
|
[考研] 0817 化學(xué)工程 299分求調(diào)劑 有科研經(jīng)歷 有二區(qū)文章 +22 | rare12345 2026-03-18 | 22/1100 |
|
|
[考研] 招收調(diào)劑碩士 +4 | lidianxing 2026-03-19 | 12/600 |
|
|
[考研] 【同濟(jì)軟件】軟件(085405)考研求調(diào)劑 +3 | 2026eternal 2026-03-18 | 3/150 |
|
|
[考博] 26博士申請(qǐng) +3 | 1042136743 2026-03-17 | 3/150 |
|
|
[論文投稿] 有沒有大佬發(fā)小論文能帶我個(gè)二作 +3 | 增銳漏人 2026-03-17 | 4/200 |
|