 |
 |
 |
 |
 |
 |
||
 |
 |
 |
 |
 |
| 3 | 1/1 | 返回列表 |
| 查看: 558 | 回復(fù): 2 | ||
| 本帖產(chǎn)生 1 個 翻譯EPI ，點擊這里進(jìn)行查看 | ||
[求助]
英文不行的我表示壓力很大 希望大家?guī)椭⒆g漢
|
||
|
When it reaches -10° C, he keeps it at this temperature for a couple of hours, then filters out the crystals. They are rinsed a couple of times with ether or another solvent such as hexane, then, while still wet with ether, added to a large flask or beaker containing 2000 ml of water. They are dissolved by stirring, then the flask or beaker is cooled down to 0° C by packing it in ice mixed with salt. When it reaches this temperature, 200 ml of glacial acetic acid is added to it with vigorous stirring. The chemist must make sure that the temperature does not go up more than a few degrees while he is adding it. filters the crystals off it and rinses them a few times with water. The crystals must now be kept moist in order for them to be turned into. In a 2000 ml flask, he puts 700 ml of concentrated sulfuric acid. It is cooled down to -10° C by packing the flask in a mixture of salt and ice, then magnetic stirring is begun. The crystals are slowly added to the sulfuric acid. They must be moist, or he will get a mess. It takes about an hour to add the crystals to the sulfuric acid. Once they are added, the flask is heated in a pan of boiling water and swirled around to dissolve the crystals. After they have dissolved, the flask is heated for a couple more minutes, then removed from the pan of boiling water. It is cooled down slowly to 0° C by first letting it cool down, then packing it in ice. chemist puts 1700 ml of water in a 3000 ml flask. Half of the sulfuric acid solution is added to it. It is heated in a pan of boiling water for a couple of hours. It is given a couple of good shakes every 15 minute |
回復(fù)此樓» 猜你喜歡
295材料工程專碩求調(diào)劑
已經(jīng)有3人回復(fù)
-
085701環(huán)境工程求調(diào)劑
已經(jīng)有5人回復(fù)
-
083000學(xué)碩274求調(diào)劑
已經(jīng)有4人回復(fù)
-
275求調(diào)劑
已經(jīng)有8人回復(fù)
-
295求調(diào)劑
已經(jīng)有4人回復(fù)
-
一志愿211院校 344分 東北農(nóng)業(yè)大學(xué)生物學(xué)學(xué)碩，求調(diào)劑
已經(jīng)有8人回復(fù)
-
085602 307分 求調(diào)劑
已經(jīng)有5人回復(fù)
-
322求調(diào)劑
已經(jīng)有3人回復(fù)
-
高溫高壓反應(yīng)求助
已經(jīng)有3人回復(fù)
-
一志愿上海理工能源動力（085800）310分求調(diào)劑
已經(jīng)有4人回復(fù)
Rio2016
木蟲 (小有名氣)
- 翻譯EPI: 72
- 應(yīng)助: 28 (小學(xué)生)
- 貴賓: 0.013
- 金幣: 3301.7
- 散金: 25
- 紅花: 6
- 帖子: 300
- 在線: 243.3小時
- 蟲號: 1910117
- 注冊: 2012-07-25
- 專業(yè): 抗腫瘤藥物藥理
【答案】應(yīng)助回帖
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
phu_grassman: 金幣+5, thanks 2013-04-12 08:53:47
飄落江南: 金幣+25, 翻譯EPI+1, ★★★★★最佳答案 2013-04-15 19:43:25
phu_grassman: 金幣+5, thanks 2013-04-12 08:53:47
飄落江南: 金幣+25, 翻譯EPI+1, ★★★★★最佳答案 2013-04-15 19:43:25
|
When it reaches -10° C, he keeps it at this temperature for a couple of hours, then filters out the crystals. 當(dāng)它達(dá)到-10° C，在這個溫度保持兩小時，然后濾掉結(jié)晶物。 They are rinsed a couple of times with ether or another solvent such as hexane, then, while still wet with ether, added to a large flask or beaker containing 2000 ml of water. 用乙醚或其他溶劑例如正己烷沖洗兩次，然后，保持帶有乙醚的濕的狀態(tài)，并轉(zhuǎn)移到一個帶有2000ml水的大瓶或燒杯中。 They are dissolved by stirring, then the flask or beaker is cooled down to 0° C by packing it in ice mixed with salt. When it reaches this temperature, 200 ml of glacial acetic acid is added to it with vigorous stirring. 攪拌使其溶解，然后把瓶子或燒杯埋到冰鹽混合物中使其降到 0° C 。當(dāng)它降到這個溫度，向里面加200 ml 冰醋酸，邊加邊攪拌。 The chemist must make sure that the temperature does not go up more than a few degrees while he is adding it. filters the crystals off it and rinses them a few times with water. 操作者必須保證，在添加的過程中不能使溫度升高幾度，濾去結(jié)晶物，用水沖洗幾次。 文章不難、、自己試譯下吧 |
2樓2013-04-11 21:25:01
3樓2013-04-15 19:46:24
相關(guān)版塊跳轉(zhuǎn)
我要訂閱樓主 飄落江南 的主題更新
| 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] 083000學(xué)碩274求調(diào)劑 +4 | Li李魚 2026-03-26 | 4/200 |
|
|---|---|---|---|---|
|
[考研] 322求調(diào)劑 +3 | 宋明欣 2026-03-27 | 3/150 |
|
|
|
[考研] 266求調(diào)劑 +11 | 陽陽哇塞 2026-03-27 | 12/600 |
|
|
|
[考研] 352分 化工與材料 +3 | 海納百川Ly 2026-03-27 | 3/150 |
|
|
|
[考研]
 一志愿 西北大學(xué) 總分282 英語一62 求調(diào)劑
+7
|
18419759900 2026-03-25 | 8/400 |
|
|
|
[考研] 311求調(diào)劑 +7 | lin0039 2026-03-26 | 7/350 |
|
|
|
[考研] 考研調(diào)劑 +9 | 小蠟新筆 2026-03-26 | 9/450 |
|
|
|
[考研] 0703化學(xué)338求調(diào)劑！ +6 | Zuhui0306 2026-03-26 | 7/350 |
|
|
|
[考研] 316求調(diào)劑 +5 | 江辭666 2026-03-26 | 5/250 |
|
|
|
[考研] 303求調(diào)劑 +7 | 元夕元 2026-03-20 | 8/400 |
|
|
|
[考研] 286求調(diào)劑 +13 | Faune 2026-03-21 | 13/650 |
|
|
|
[考研] 279求調(diào)劑 +6 | 紅衣隱官 2026-03-21 | 6/300 |
|
|
|
[考研] 機(jī)械學(xué)碩310分，數(shù)一英一，一志愿211本科雙非找調(diào)劑信息 +3 | @357 2026-03-25 | 3/150 |
|
|
|
[考研] 一志愿上海交大生物與醫(yī)藥專碩324分，求調(diào)劑 +6 | jiajunX 2026-03-22 | 6/300 |
|
|
|
[考研] 290分調(diào)劑求助 +3 | 吉祥止止陳 2026-03-25 | 3/150 |
|
|
|
[考研] 考研一志愿蘇州大學(xué)初始315（英一）求調(diào)劑 +3 | sbdksD 2026-03-24 | 4/200 |
|
|
|
[考研] 289材料與化工（085600）B區(qū)求調(diào)劑 +4 | 這么名字咋樣 2026-03-22 | 5/250 |
|
|
|
[考研] 384求調(diào)劑 +3 | 子系博 2026-03-22 | 6/300 |
|
|
|
[考研] 求調(diào)劑院校信息 +6 | CX 330 2026-03-21 | 6/300 |
|
|
|
[考研] 一志愿深大，0703化學(xué)，總分302，求調(diào)劑 +4 | 七月-七七 2026-03-21 | 4/200 |
|