| 查看: 1754 | 回复: 12 | |||
| 当前主题已经存档。 | |||
potassium_ustb金虫 (正式写手)
|
[交流]
常用英文化学分子式、方程式及数学式的读法
|
||
|
常用英文化学分子式、方程式及数学式的读法 Na2SO4 Sodium sulphate; C-a-two-S-O-four Mg(OH)2 magnesium hydroxide; M-g-pause-O-H-pause-twice; M-g-in brackets twice Ca2(PO4)3· 2H2O calcium phosphate two hydrate; C-a-two-pause-P-O four-pause- three times-dot-two-H two-O [Zn(NH3)4]2+ tetra-ammonium zinc complex cation ® give; yield; produce, form,become evolved as a gas; give off a gas ¯ is precipitated; gives X precipitate = reacts reversibly -------------------------------------------------------------------------------- Cu, D in the precence of a copper as a catalyst on heating CO32- + Ca2+ = CaCO3¯ a carbonate anion with a valancy of two plus a calcium cation with a valancy of two produce a calcium carbonate precipitate R’ R prime R” R double prime, R second prime R1 R sub one 100° C one hundred degrees Centigrade + plus; positive - minus; negative ´ multiplied by; times ¸ divided by ± plus or minus = is equal to; equals º is identically equal to » is approximately equal to ( ) round brackets; parentheses [ ] square brackets { } braces a>>b a is much greater than b a³ b a is greater than or equal to b aµ b a varies directly as b lognX logX to the base n x2 x square, x squared, the square of x Xn X to n factors; the nth power of x; x to the power n x -8 x to the minus eighth power ï xï the absolute value of x the mean value of X the sum of the terms indicated; summation of D x or d x the increment of x dx differential x dy/dx the first derivative of y with respect to x ò integral ¥ infinity 1/2 a half; one half 2/3 two thirds 5/123 five over a hundred and twenty-three eight and three over fourths; eight and three quarters 0.01 O point O one; zero point zero one; nought point nought one 6 % 6 percent 3‰ 3 per mille 2 : 3 the ratio of two to three r=xd r equals x multiplied by d 5´ 2=10 five times two equals ten x3/8=y2 x raised to the third power divided by eight equals y squared (a+b-c´ d)/e=f a plus b minus c multiplied by d, all divided by e equals f y = (Wt-W)/x y equals W sub t minus W over x |
回复此楼» 猜你喜欢
26届博士申请
已经有4人回复
-
PLLA 微球在生物医学领域的研究与应用
已经有1人回复
-
有机高分子材料论文润色/翻译怎么收费?
已经有82人回复
-
PLLA 微球的材料特性与制备工艺解析
已经有0人回复
-
医用聚己内酯（PCL）全解析：从两段式降解到组织工程应用
已经有0人回复
-
反相硅胶如何再生？
已经有1人回复
-
哈尔滨理工大学2026年研究生调剂，材料科学与化学工程学院研究生调剂
已经有4人回复
-
武汉一本高校招收材料、化学、高分子、纺织、生物相关专业硕士生
已经有0人回复
-
西南交通大学医学院招收生物医学工程和材料与化工专业硕士研究生
已经有15人回复
-
研究生招生
已经有0人回复
» 本主题相关商家推荐: (我也要在这里推广)
2楼2006-01-23 11:47:33
pinbupa
木虫 (小有名气)
- 应助: 0 (幼儿园)
- 金币: 1140.3
- 散金: 674
- 红花: 2
- 帖子: 279
- 在线: 118.3小时
- 虫号: 167797
- 注册: 2006-01-15
- 性别: GG
- 专业: 无机纳米化学
3楼2006-01-23 13:11:44
4楼2006-01-29 10:20:24
januswen
木虫 (小有名气)
- 应助: 0 (幼儿园)
- 金币: 3472.1
- 红花: 2
- 帖子: 219
- 在线: 144.4小时
- 虫号: 106594
- 注册: 2005-11-17
- 性别: GG
- 专业: 特种药物
5楼2006-01-29 10:55:43
0.5
 |
6楼2006-01-31 23:29:34
0.5
 |
7楼2006-02-01 11:07:28
小狗
荣誉版主 (知名作家)
我是妖人，我怕人妖
- 应助: 0 (幼儿园)
- 贵宾: 1.8
- 金币: 2394.6
- 红花: 5
- 帖子: 5815
- 在线: 9.5小时
- 虫号: 152837
- 注册: 2006-01-02
- 性别: GG
- 专业: 可再生与替代能源利用中的
8楼2006-02-02 12:12:23
0.5
 |
9楼2006-02-02 12:37:24
10楼2006-02-16 15:04:54
