英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字，中文词皆可：


请选择你想看的字典辞典：
单词字典翻译
082397查看　082397　在百度字典中的解释百度英翻中〔查看〕
082397查看　082397　在Google字典中的解释Google英翻中〔查看〕
082397查看　082397　在Yahoo字典中的解释Yahoo英翻中〔查看〕

安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • databases - How can I get xyz coordinates of atoms of a unit cell . . .
    Go to Calculate → Packing Slicing… and under Packing area tick Pack option, and under Include Atoms area select … that Fit Now you have the content of the entire unit cell: Save the data as XYZ by clicking File → Save As… → Save as type: XMol files (* xyz) This produces a file with the coordinates of all atoms of the unit cell
  • Which biphenyl is optically active? - Chemistry Stack Exchange
    Biphenyl 2 is the only optically active compound here These stereoisomers are due to the hindered rotation about the 1,1'-single bond of the compound (Ref 1) Biphenyl 3 is not optically active, because partially allowed rotation about the 1,1'-single bond of the compound (rotation is only partially restricted) To illustrate this phenomenon, I depicted the following diagram: Note that
  • pH notation in text - Chemistry Stack Exchange
    When referring to units of pH in continuous text (i e not in a table), which is the recommended usage? pH 7 to pH 8 pH 7 to 8 What about when the term "pH" has already been mentioned in the text?
  • Joules to kJ mol conversion - Chemistry Stack Exchange
    In my AP Chem class we are working on testing Hess's Law and conducted three reactions Then enthalpy changes of the 1) $\\ce{NaOH + HCl}$ and 2) $\\ce{NaOH + NH4Cl}$ to predict the enthalpy change o
  • What are angular and radial nodes? - Chemistry Stack Exchange
    Nodes are the points in space around a nucleus where the probability of finding an electron is zero However, I heard that there are two kinds of nodes, radial nodes and angular nodes What are the
  • How to convert an XYZ file to Z-matrix? - Chemistry Stack Exchange
    The format you have posted is actually (simple) xmol This means the first line denotes the number of atoms, the second line denotes a comment, and both need to be skipped
  • Ice Crystal Matrix measurements of H2O molecules?
    I want a mathematically generated 3D STL copy of this image, however it's represent algorithmically If I do all the H2O's as individual pieces with female connections prepared for chopped bike sp
  • Why does nitrogen have a maximum covalency of 4?
    Recall that covalency is the number of shared electron pairs formed by an atom of that element Nitrogen's maximum covalency is indeed $4$ And no, it does not break up its lone pair I'll give you a simple example Have a look at the Lewis structure of the ammonium ion: (source) Notice that nitrogen's octet is complete as soon it bonds with three $\ce {H}$ atoms (aka forms ammonia) The
  • Trimethoprim solubility - Chemistry Stack Exchange
    I’m working on preparing a stock solution of Trimethoprim (TMP) for a downstream biological assay and encountering solubility issues I’d appreciate any guidance from folks who’ve done this before
  • Arrangement of elements in the reactivity series
    The reason that lithium is on the top of the activity series is due to its behavior in aqueous reactions with water and acid Due to the lithium atom's very small size (only two energy levels), the lithium ion interacts well with water forming ion-dipole interactions The lithium atom's small size compared to sodium and potassium is more entropically favorable in the formation of ion-dipole





中文字典-英文字典  2005-2009