复合键就是由多个列组成的键。
为了使用操作系统中的标识符惟一地表示维度，您有时需要使用一个复合键。
To uniquely represent a dimension using identifiers from an operational system, you sometimes need to use a composite key.
如果定义复合键，则主键中列的顺序与关系图的表中显示的列顺序匹配。
If you define a compound key, the order of columns in the primary key matches the order of columns as shown in the table in your diagram.
如果联接键是一个复合键，那么必须使用PRIOR运算符为每个键所在的列加上前缀。
If the join key is a composite key, each key column must be prefixed with the PRIOR operator.
在过去一个月里，我可以找到能够解决投票、版本化、Ajax、复合键以及不受基本Rails支持的所有特性的插件。
Over the past month, I've been able to find Rails plug-ins to handle voting, versioning, Ajax, composite keys, and all manner of features that basic Rails doesn't support.
经改性剂改性前后的IR分析结果表明，改性剂与pva分子间发生了强烈的相互作用，并形成了较强的分子复合键。
IR spectra of PVA modified by the modifier show that intense reaction among molecules of the modifier and PVA occurred and stronger complex bonds formed.
清单7以isbn键作为公分母组合前面两个查询，以便产生包含图书标题、作者、图像、价格以及销售队伍的复合结果。
Listing 7 combines the two preceding queries, using the ISBN key as the common denominator, to produce a composite result containing book titles, authors, images, prices, and sales ranks.
需要加上一些额外的cookie，形成复合的缓存键。
You need to supplement it with some additional cookies to make a composite cache key.
通过键交互和ARIA支持，支持ARIA的浏览器和屏幕阅读器将能够帮助残疾人访问此复合框小部件。
With key interaction and ARIA support, this combo box widget can be accessible to people with disabilities by using ARIA-supported browsers and screen readers.
但是研究者发现角质蛋白复合物的化学键保留的很少。 富氮层在两个化石上都有所发现。
But the researchers found chemical-bond fingerprints of chitin-protein complex in thin, nitrogen-rich layers in both fossils.
新的复合物是以材料中的碳硫键为基础。
The new polymer relies on carbon-sulfur bonds within the material.
在图层复合菜单中选择新建图层复合或者直接在面板下点击新建图层复合快捷键。
Click on the layer Comps menu and select new layer comp or click on the Create a new layer comp button at the bottom of the layer Comps Panel.
当键入if语句和终止的冒号，并按键盘上的回车键时，Python解释器就知道您输入了一个复合语句。
When you type in the if statement and the terminating colon, then press Return (or enter) on your keyboard, the Python interpreter realizes you have entered a compound statement.
一旦精氨酸-紫杉醇复合体进入细胞内，谷胱甘肽就会打断二硫键，从而解离了精氨酸-紫杉醇复合体，复合体也完成了它的使命。
Once the arginine-Taxol complex is inside the cell, the glutathione can get to work hacking away at the sulphur bonds, and in the process, unwittingly release the compound that will spell its doom.
分析了V - N -空位复合体的成键特性和电荷转移情况。
The bond characteristics and charge transfer in the V-N-vacancy complex are analyzed.
我应该使用复合主键如果我使用JPA和键可以改变吗？
Should I use composite primary keys if I use JPA and the keys can change?
通过以含醚键的聚(氧化丙烯-氧化乙烯)为主体，与二氧化锡溶胶复合，制备了一类可用于尼龙的抗静电剂。
Poly (propylene oxide-ethylene oxide) containing ether linkage was used to make complexes with stannic oxide sol, thus producing a kind of anti-static agent for nylon resins.
结果：水飞蓟宾卵磷脂复合物具有水飞蓟宾和卵磷脂的红外光谱特征，其磷核磁共振波谱显示水飞蓟宾和卵磷脂间以非共价键结合。
Results: SLC possesses the characteristics of the infrared spectrum of silybin and lecithin, its nuclear magnetic resonance spectrum showed that SLC was combined by non covalent bond.
本文通过几个简单含碘复合物的相对论密度泛函计算，考察了相对论效应对碘键作用的影响。
This paper has inspected the effect of the relative theory on the function of the bond of idoine through functional calculating of the relative density of several simple compounds containing idoine.
使用复合索引键便可完成这项定义。
核/壳结构复合纳米材料是具有特殊性能的功能材料，是由一种纳米材料通过化学键或其他相互作用将另一种纳米材料包覆起来形成的纳米尺度的有序组装结构。
The nanocomposite with core/shell structures is an ordered assembly system in which one nanomaterial is covered by another nanomaterial via chemical bond or other interactions.
本文根据以前传统或复合基团相互作用法的模型并且考虑到本方法模指数的概念，提出了一般物性估算模型方程：，根据此模型对1228种物质进行拟合得出基团相互作用键的贡献值。
In view of simple group contribution and bond module index, a universal model was set up as the following:, and bond contribution data from 1228 substances were calculated by this equation.
最后，采用室温键合技术，将带有微纳结构的基片与盖片封合成玻璃微-纳流控复合芯片。
Finally, the channel-structured glass substrate was sealed to a cover glass plate by using room temperature bonding technique.
我们将涵盖如何做天空取代并获得磨砂使用亮度键，添加元素的三维层构建一个基本的复合材料。
We will be covering how to do sky replace and get a matte using Luma Keys and add 3d layers of elements to build a basic composite.
您会将复合索引键建立成匿名型别，或是包含要比较之值的具名型别。
You create a composite key as an anonymous type or named typed with the values that you want to compare.
这种复合并不是简单的有机相与无机相的混合，而是二者在纳米范围内通过化学键结合而成。
This is not the simple organic compound and inorganic hybrid, but both are in nanometer range by chemical combination.
还通过对该复合材料的结构表征初步推测，该复合材料含有硫醇基，由硫-硫键断裂和键合实现能量释放与存储。
From the structural characterization, it is deduced that this composite material includes a polymer with mercaptan attaching to the...
大部分的遗传毒性致癌物是与DNA结合的亲电子试剂，它们直接与DNA相互作用，形成共价键，从而形成DNA -致癌物复合体，或称之为dna加合物。
Most of Genotoxic carcinogens are electrophiles that bind with DNA, and they interact directly with DNA and form covalent bond, resulting in DNA-carcinogen complexes, or DNA adducts.
H-O氢键的形成使复合物中水分子H-O键对称伸缩振动频率减小（红移）。
The H-O symmetric stretching modes of water in complexes are red-shifted relative to that of the monomer water.
H-O氢键的形成使复合物中水分子H-O键对称伸缩振动频率减小（红移）。
The H-O symmetric stretching modes of water in complexes are red-shifted relative to that of the monomer water.
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