如果使用可空的vargraphic列，那么1021字节的索引限制仍然是对的。
If you use a nullable VARGRAPHIC column instead, the 1021-byte index limitation is still true.
如果数据库中的一列被标志为可空，那么数据模型类相应的属性将是一个可空的类型。
If a column in the database is marked as being nullable, then the corresponding property in the data model class created by the LINQ to SQL designer will be a nullable type.
例如，在Unicode数据库中创建一个可空的VARCHAR(1024)列，然后在这个VARCHAR(1024)列上创建索引。
For example, when you create a nullable VARCHAR (1024) column in a Unicode database and then create an index on VARCHAR (1024) column. You will encounter the following error.
如果使用可空的varchar列并只涉及ASCII字符(在utf - 8格式中每字符1字节)，那么可以建立索引的最大字符长度是1021个字符。
If you use a nullable VARCHAR column and only ASCII characters (UTF-8 format 1 byte per character) involved, the maximum character length that can be indexed is 1021 characters.
优点包括数据表比较紧凑(没有不需要的可空字段)，数据跨三个子类的表进行分区，容易使用超类的表与其他表进行关联。
The pros include compact tables (no unnecessary nullable columns), data partitions across three subclass tables and easy association with other tables using the top super class table.
但是ElectricityDeal有太多自己的属性，因此有很多电相关的可空字段加入了Deal表。
However ElectricityDeal had too many of its own properties. Accordingly many electricity-specific nullable columns were added to the Deal table.
父亲去世时他得到一大笔财产，可仅仅几年的时间就将这笔钱胡乱挥霍一空。
He got a large fortune when his father died, but trifled it away in only a few years of needless spending.
它部署在剑桥大学的计算机实验室，其唯一目的是监视一个咖啡壶，使实验室用户可避免将时间浪费在一个空的咖啡壶上。
It was deployed at a Cambridge University computer lab, and its sole purpose was to monitor a particular coffee maker so that lab users could avoid wasted trips to an empty coffee pot.
有一种观点认为空乘人员——男人和女人——都是可捕猎的猎物，有时还变得轻佻。我想这缓解了工作的单调。
There is a perception that cabin crew – men and women – are fair game and sometimes it can get flirtatious; I guess it relieves the tedium.
成群结队的蝗虫席卷了西部非洲，将该地区的农作物洗劫一空，其影响可波及远在亚洲的巴基斯坦。
Numerous swarms of locusts that have already devastated crops across West Africa may affect countries as far away as Pakistan.
空的拉菲和拉图酒瓶在易趣上就有出售，而售价可高达好几百欧元。
Empty Lafite and Latour bottles are sold on eBay for several hundred euros.
这些指向入口点的非空指针可实现xa _例程。
These non-null Pointers to entry points implement the xa_ routines.
例如，由以色列航宇工业公司（Israel Aerospace Industries）和欧洲的航空业巨头——欧洲航空防务和航天公司(EADS)所联合开发的鹰-1无人机（Eagle-1），其滞空时间可超过50小时。
The Eagle-1, for example, developed by Israel Aerospace Industries and EADS, Europe’s aviation giant, can stay aloft for more than 50 hours at a time.
因此，即使你不使用所有的气袋，它仍然可以是有利可图的空他们。
So even if you don't use all gas pockets, it can still be profitable to empty them.
为什么微软代码的分析检查参数为空才可公开访问的方法吗？
Why does Microsoft Code Analysis check for arguments being null only publicly accessible methods?
结果：马齿苋提取物可显著提高小鼠腹腔巨噬细胞的吞噬百分率和吞噬指数；促进溶血素及溶血空斑的形成；促进淋巴细胞的转化。
Results: portulaca extracts improved the devouring percentage and index of macrophage cell and promoted the formation of hemolysin and hemolysis void the transformation of lymphocyte.
多数操作系统处理可移动磁盘的方式与固定磁盘几乎是一样的——格式化一个新的盘碟，同时在盘上生成一个空的文件系统。
Most OSs handle removable disks almost exactly like fixed disks - a new cartridge is formatted and an empty file system is generated on the disk.
要做到贫穷而又诚实实在不容易：这就好比一只空睡袋，很难立起来；可一旦它直立了，就是坚实有力的！
It's hard to be poor and honest: an empty sack can hardly stand upright, but if it dose, it's a stout one!
可缩量、理论值与现场沿空留巷试验测结果相同，说明了这种力学模型的正确性。
The shrink quantity, theory value and test result of retaining roadways along goaf are the same, this shows the exantness of the mechanics model.
这段空窗期让错误讯息有机可趁，许多部落格也充斥许多不切实际的猜测文章。 网友们也互相指控对方是人工智慧/被精神控制。
This has made room for heaps of disinfo and blogosphere is full of speculations which are mainly not based on reality, and also full of people accusing each other of being »AI / mind programmed«.
研究试验结果表明，分层扫气可减少换气过程的燃料损失，使燃油消耗率大幅度下降；使混合气空燃比的范围加大。
The result shows that stratified scavenging reduces fuel loss during air exchange greatly lowing the fuel consumption rate and enlarging the air-fuel ratio range.
公式的可满足性是其相应断言的意义集不空。
Satisfibility of the logical formula is that meaning set corresponding to it is not empty.
膜片表面空球和PVA涂层两种保护形式中，空球保护可明显减弱膜片的初期突释，而PVA涂层保护由于其很快脱落，对膜片的突释抑制不明显。
The burst release of wafer protected by blank MS was restrained, however, no obvious restrain effect was observed for wafer protected by PVA for its quickly falling off.
西里尔把手伸进兜里——可兜里是空的！
采用顶空色谱测定了河流底泥中的可酸挥发硫化物。
Acid-volatile sulfide in river sediment sample was measured by reaction headspace .
用时间自动机验证一个有穷状态实时系统的正确性，可归结为判定两个时间正则语言的包含问题，亦可归结为判定两个时间正则语言的交是否为空的问题。
To verify the correctness of the finite state real time system by timed automaton can come down to the inclusion of two timed regular languages.
用时间自动机验证一个有穷状态实时系统的正确性，可归结为判定两个时间正则语言的包含问题，亦可归结为判定两个时间正则语言的交是否为空的问题。
To verify the correctness of the finite state real time system by timed automaton can come down to the inclusion of two timed regular languages.
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