手动材料选择

Advanced Search Help

高级搜索帮助

MatWeb's Advanced Search combines all of the current search functionality into the single most powerful search MatWeb has to offer.

MatWeb高级搜索结合了现在所有的搜索功能，是一个最强大的搜索系统。

To perform a search using Advanced Search:

高级搜索操作指南：

• Find the type of searches you want to conduct (Text, Property or Material Category).
• 选择你想使用的搜索方式（输入文字，性能或材料类型）。
• Select or input the initial set of criteria of the search into the drop down or text boxes.
• 在可选项中选择或文本框中输入初始搜索条件。
• Click on the "Add" button to add your criteria. Registered users may add up to 3 criteria. Premium users may add up to 10 criteria.
• 点击“添加”（"Add"）按钮，注册用户可以添加3个搜索条件，付费用户可添加10个搜索条件。
• You should see your criteria appear in the "Selected Search Criteria" area, along with the count.
• 您设定的搜索条件会出现在“已选择搜索条件”（Selected Search Criteria）区域。
• After you have added the criteria you want, click on the "Display Search Results" button to begin the search.
• 添加搜索条件后，点击“显示搜索结果”（ "Display Search Results"）按钮，开始搜索。

To edit criteria from a search:

编辑搜索条件：

• Click on the paper and pencil icon next to the criterion you wish to edit. Material Category criterion types cannot be edited.
• 点击纸笔图标，可进行搜索条件编辑。材料类型不能编辑。

To delete criteria from a search:

删除搜索条件：

• Click on the trash can next to the criterion you wish to delete. Any criterion in the search can be deleted.
• 点击垃圾箱，可进行搜索条件删除。任何搜索条件都可以删除。

Ordering and paging search results:

搜索结果排序和分页：

• The default order of search results is MatWeb's index numbering system, which is designed to keep similar materials together.
• 搜索结果的默认排序方式是根据MatWeb索引系统，将相似材料放在一起
• Premium users can sort the results set by property value (increasing or decreasing) or alphabetical by name (ascending or descending). The sort order can be changed by clicking the up/down arrows by the column heading on the search results.
• 付费用户（Premium users）可通过性能数据（增加或减少）或按名字字母排序（上升或下降）对结果分类设定，并可通过点击上/下箭头来改变搜索结果排序
• To change the number of results per page, select the desired quantity under "Results" and then click the "Apply" button.
• 改变每页显示结果数量，在“结果”（ "Results"）下选择期望的数量，并点击“应用”（ "Apply"）按钮。

Adding materials to your compare folder:

在对比文件夹中添加材料：

• Click here for help with the compare folder.
• 对比文件夹帮助，点击这里。

Property Search FAQ

性能搜索常见问题解答

What does the Min and Max value tell me?

什么是最小值和最大值（ Min and Max value）？

• The MatWeb database contains data between these ranges. Searching outside of these ranges generally will not produce any results.
• MatWeb数据库中收录的数据在此范围之间。超出此范围一般搜索不到结果。

What is a Property Group?

什么是性能组（Property Group）？

• Some "properties" in the property tree are actually Property Groups. A Property Group allows a group of properties can be searched as if they were a single property. Property Groups are indicated in the Property tree by this icon :
•  在性能树中，一些“性能”（ "properties"）实际是性能组。一个性能组像一个单独的性能一样被搜索，而结果将有一组性能被搜索到。在性能树中，性能组以图标标记。

What is an Optional Condition?

是什么选择性 条件（Optional Condition）？

• Some properties have conditional data associated with them in our database (where the property varies by temperature, pressure, load, etc). If conditional data exists, then you will see the option to select a condition, and you may search on the condition.
• 在数据库中，一些性能含有与其相关联的条件性数据（性能随温度、压力、负载等变化而不同）。如果这些条件性数据存在，你会看到选择条件选项，要求根据条件搜索。

What is the "Normal Range" for a property condition?

什么是一个性能条件的“正常范围”( "Normal Range")？

• Some property conditions have a "normal range" associated with them. For example, the "normal range" for temperature is room temperature or about 20 - 25°C. Non-conditional data is assumed to be "normal", so searching withing the "normal range" will return mixed conditional and non-conditional data. If you would like the search to return only conditional data, then make sure your search criteria is outside of the normal range.
• 一些性能条件有相关的“正常范围”( "Normal Range")。例如，温度的“正常范围”( "Normal")是室温或大概20 - 25°C。非条件性数据是假定条件是在“正常范围”，所以在“正常范围”内搜索结果将混合了条件性和非条件性数据。如果你只要搜索条件性数据，那么请确保搜索条件要在正常范围外。

What does the "Use Interpolation" check box do?

什么是“Use Interpolation”？

• Conditional data is often incomplete, and may contain sparse data points spread out over a large range. In MatWeb, interpolation is a mathematical search technique that attempts to find materials *as if* condition data points were filled in between the known points. See this article for more detailed information. 
  
• 条件数据经常是不完整的，并且可能含数据点少，导致搜索出的结果宽泛。在MatWeb中，interpolation是一个数学搜索技术，用于当输入条件数据点符介于数据库中数据点之间时尝试搜索出材料
• Since interpolation is a type of estimate or "guess", if you find a material via interpolation, you should review the actual material data sheet to see if the results seem sensible.
• 因为interpolation是一种预估或猜测，当你通过interpolation找到一个材料时，需要浏览实际材料数据表，以确认结果是否合理。
• Generally, interpolation techniques involve more processing, and therefor often taking longer than a normal search.
• 一般来说，interpolation技术包含更多的流程，因此经常比正常搜索需时间更长。
• Generaly, selecting the interpolation checkbox is useful if you have a narrow range of conditions that you would like to find matches on. The wider your conditional search range, the less likely it is that interpolation will help you find additional materials.
• 通常，在搜索材料时，如果条件范围窄，选择interpolation checkbox会比较有用。条件搜索范围越广，interpolation搜索到另外材料的可能性越小。