bnf
- 网络法国国家图书馆；巴科斯范式(Backus-Naur form)；巴克斯范式(Backus normal form)
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法国国家图书馆
设在巴黎的法国国家图书馆(BNF)为法国规模最大，也是最现代化的图书馆，历史悠久，典藏极为丰富；它同时又是国家版本图 …
巴科斯范式(Backus-Naur form)
在巴科斯范式(BNF)条目中的邮政地址的例子可以被指定为:postal-address = name-part street zip-part name-part = *(pers...
巴克斯范式(Backus normal form)
yacc 使用巴克斯范式(BNF)定义语法，能处理上下文无关文法(context-free)。出现在每个产生式左边(left-hand side：lhs)的符号 …
1
Then, HSM domain ontology was described and expressed by Backus -Naur Form (BNF) formulations, and was stored in relationship database.
采用巴科斯范式对领域本体进行统一的描述和表达，并利用关系数据库的形式存储。
2
In BNF , the only way to indicate a list of an arbitrary number of elements is through recursion .
在BNF表示法中，为了表示一串任意个数的元素，唯一的方法是通过递归来定义。
3
Some reports indicate reduction of legume BNF by mineral N is dependent on host species and form of N available.
一些报告还指出，通过矿质氮引起的豆类作物生物固氮的减少与寄主品种和有效氮的形态有关。
4
As a critical tool, BNF models play irreplaceable roles in predicting nitrogen fixation of soybean quantitatively.
生物固氮模型作为一种重要工具，在定量预测大豆生物固氮速率方面具有不可替代的作用。
5
Like rhizobia, the nitrogen-fixing endophyte Frankia elicits the formation of specialized root nodule structures which house BNF processes.
像根瘤菌一样，固氮的内寄生弗兰克氏菌能够诱发特殊的根瘤结构，在其中进行生物固氮过程。
6
To ensure N available from BNF does not limit legume yield, many farmers inoculate their crops with rhizobia .
为确保来自生物固氮的有效氮不限制豆科作物的产量，许多农民用根瘤菌接种他们的作物。
7
The grammars for complex languages are commonly described using BNF (Backus-Naur Form) notation or its close relative, EBNF (Extended BNF).
复杂语言的语法通常都是使用BNF（巴科斯-诺尔范式，Backus-NaurForm）表示法或者其“近亲”―EBNF（扩展的BNF）描述的。
8
Generally, increasing mineral N available to legumes reduces N derived from BNF without enhancing yield appreciably.
一般来，说对豆类作物增加矿质氮的提供会减少生物固氮量而并不能明显提高产量。
9
If you're familiar with parsing, you'll quickly realize that the second argument to the parse function is equivalent to providing a BNF.
如果熟悉解析的话，将很快就明白parse函数的第二个参数相当于提供了一个BNF。
10
Although relative response to N by legume species may differ, N fertilization will reduce nodulation and BNF by legumes.
尽管不同豆类作物种对氮的反应不同，但施氮肥会减少豆类作物结瘤和生物固氮量。
11
Recommendations for starter N originate from our knowledge of the legume's physiological dependence on mineral N prior to onset of BNF .
对豆类作物推荐施种肥是因为我们知道在出现生物固氮之前豆科植株对矿质氮有生理依赖。
12
The issue whether starter N will increase nodulation and BNF is, however, complicated by several factors.
然而，“起动氮”是否会增加根瘤和生物固氮的问题是复杂的，它受多种因素影响。
13
the paper adopts bnf to express the logic expressions , providing a good formalization method.
论文采用了巴科斯范式来表示逻辑表达式，为其提供了一个很好的形式化的表达方式。
14
Only when availability of N was increased through effective nodulation and BNF was there a response to applied P.
只有通过有效结瘤和生物固氮增加有效氮，施用磷肥才有效应。
15
This section provides basic information on how N affects legume BNF processes and under what conditions legumes respond to mineral N.
这部分介绍氮如何影响豆科生物固氮过程以及在什么样的条件下豆类作物对矿质氮有反应。
16
Water-rich foods tend to be low in calories or have a low energy density, a BNF conference heard.
一次英国营养基金会会议上说，水含量丰富的食物往往是低热量或低能量密度。
17
The BNF process reduces N2 to plant available forms using bacterial enzymes produced within root nodules.
生物固氮过程是利用植物根瘤中产生的细菌酶把N2还原成有效形态。
18
Based on BNF code, this paper investigates the problems concerning digital processing of rare Chinese characters.
在BNF范式编码的基础上，深入讨论了生僻汉字数字化处理问题。
19
This effect of mineral N assumes there is adequate numbers of effective rhizobia available to the crop to maximize BNF.
矿质氮的这种效果是假定有大量的有效根瘤菌可使作物的生物固氮达到最大。
20
Firstly the paper models the simulation scenes scripts of MANET with BNFs and constraints.
首先，创建了移动自组网模拟场景脚本的BNF与约束模型。