24小时热门版块排行榜    

北京石油化工学院2026年研究生招生接收调剂公告
查看: 779  |  回复: 4
当前只显示满足指定条件的回帖,点击这里查看本话题的所有回帖

wu砰然心动

银虫 (小有名气)

[求助] 请教MS软件大神 已有1人参与

图中划线的两个选项有什么区别啊。这是在MS中固定原子时弹出的对话框。

请教MS软件大神
1.png
回复此楼

» 猜你喜欢

» 本主题相关价值贴推荐,对您同样有帮助:

已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

wu砰然心动

银虫 (小有名气)

引用回帖:
3楼: Originally posted by 月只蓝 at 2017-03-21 11:14:52
In lattices, atom positions may be described using two different coordinate systems, Cartesian or fractional.

Cartesian coordinates are defined in the usual way using 3 orthogonal unit vectors i,  ...

懂了,谢谢回复

发自小木虫Android客户端
5楼2017-03-21 12:47:38
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
查看全部 5 个回答

Liffighting

木虫 (初入文坛)

一个笛卡尔坐标,一个分数坐标

发自小木虫Android客户端
2楼2017-03-21 08:25:22
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

月只蓝

主管区长 (职业作家)

【答案】应助回帖

★ ★ ★ ★ ★ ★
感谢参与,应助指数 +1
wu砰然心动: 金币+6, ★★★★★最佳答案 2017-03-25 15:39:41
In lattices, atom positions may be described using two different coordinate systems, Cartesian or fractional.

Cartesian coordinates are defined in the usual way using 3 orthogonal unit vectors i, j and k.

In Materials Studio, Cartesian coordinates are used to describe the positions of objects in nonperiodic structures and the absolute positions of objects in a lattice.

Fractional coordinates are used to describe the positions of objects in a lattice relative to the unit cell. For crystals they are defined in terms of the lattice vectors a, b and c. For surfaces they are defined in terms of u and v and a third vector w which is a unit vector normal to both u and v.

Fractional coordinates indicate where objects are in the unit cell. For example, in a crystal an atom lying at (0.5,0.5,0.5) in fractional coordinates will be directly in the middle of the unit cell.

In a surface an atom lying at (0.5,0.5,0.5) in fractional coordinates will be 0.5 Å from the surface plane directly above the middle of the unit cell. Likewise a second atom lying at (0.5,0.5,4.5) in fractional coordinates will be 4.5 Å from the surface plane directly above the middle of the unit cell, and will have no periodic relationship to the first.
MATLAB、MS小问题、普通问题请发帖求助!时间精力有限,恕不接受无偿私信求助。
3楼2017-03-21 11:14:52
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

wu砰然心动

银虫 (小有名气)

引用回帖:
2楼: Originally posted by Liffighting at 2017-03-21 08:25:22
一个笛卡尔坐标,一个分数坐标

这个我知道,就是具体在建模中会有什么效果。

发自小木虫Android客户端
4楼2017-03-21 12:44:03
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[基金申请] 面上5B能上会吗? +7 redcom 2026-03-29 7/350 2026-03-30 12:44 by 爱搞研究的小孩
[考研] 300求调剂,材料科学英一数二 +15 leaflight 2026-03-24 15/750 2026-03-30 10:54 by 1172367218
[考研] 085404求调剂,总分309,本科经历较为丰富 +6 来财aa 2026-03-25 6/300 2026-03-30 09:48 by 青海小西牛
[考研] 求调剂 +6 家佳佳佳佳佳 2026-03-29 6/300 2026-03-30 06:48 by zhyzzh
[考研] 311求调剂 +6 冬十三 2026-03-24 6/300 2026-03-29 20:45 by 无际的草原
[考研] 各位老师好,我的一志愿为北京科技大学085601材料专硕 +9 Koxui 2026-03-28 9/450 2026-03-29 20:43 by 无际的草原
[考研] 环境工程 085701,267求调剂 +6 minht 2026-03-29 6/300 2026-03-29 16:21 by 学员8dgXkO
[考研] 329求调剂 +10 钮恩雪 2026-03-25 10/500 2026-03-29 13:32 by peike
[考研] 295材料工程专硕求调剂 +7 1428151015 2026-03-27 7/350 2026-03-28 19:58 by S240
[考研] 322求调剂 +5 旧吢 2026-03-24 5/250 2026-03-28 13:26 by Iveryant
[考研] 药学105500求调剂 +3 Ssun。。 2026-03-28 3/150 2026-03-28 11:24 by lxf170613
[考研] 考研调剂 +9 小蜡新笔 2026-03-26 9/450 2026-03-27 11:10 by 不吃魚的貓
[考研] 341求调剂 +7 青柠檬1 2026-03-26 7/350 2026-03-27 00:19 by wxiongid
[考研] 生物学 296 求调剂 +4 朵朵- 2026-03-26 6/300 2026-03-26 19:01 by 不吃魚的貓
[考研] 085602化学工程求调剂。 +4 平乐乐乐 2026-03-26 4/200 2026-03-26 17:57 by fmesaito
[考研] 26考研-291分-厦门大学(085601)-柔性电子学院材料工程专业求调剂 +3 min3 2026-03-24 4/200 2026-03-25 18:22 by xcjcqu
[考研] 318求调剂 +3 plum李子 2026-03-23 3/150 2026-03-25 09:42 by 雾散后相遇lc
[考研] 材料专硕找调剂 +5 哈哈哈吼吼吼哈 2026-03-23 5/250 2026-03-24 19:07 by 了了了了。。
[考研] 277分求调剂,跨调材料 +3 考研调剂lxh 2026-03-24 3/150 2026-03-24 13:52 by JourneyLucky
[考研] 344求调剂 +3 desto 2026-03-24 3/150 2026-03-24 10:09 by 搏击518
信息提示
请填处理意见