在线词典
在线词典,是一款在线使用的中英文查词词典。本工具支持查询英文和中文单词及词组的含义,查询效率高、结果丰富,包括单词变体、常用短语、英英释义、同义词、同根词、词语辨析等,是外语学习者必备的在线查词工具。
输入要查询的单词:
Extended real number line
查词链接:
https://www.dute.org/dict/Extended_real_number_line
复制链接 扩展实数线(扩展实数线又称广义实数。在不会混淆时,符号 常简写成。扩展的实数线在研究数学分析,特别是积分时非常有用)
查看英英释义
abstract:
In mathematics, the affinely extended real number system is obtained from the real number system R by adding two elements: +∞ and −∞ (read as positive infinity and negative infinity respectively). The projective extended real number system adds a single object, ∞ (infinity) and makes no distinction between "positive" or "negative" infinity.
网络释义
扩展的实数轴
... expression:表达式; extended real number line:扩展的实数轴; false:假; ...
正在查询...
{error}
你是不是想查找:
- {typos}
{word}
{phones} {trans} {trans_ee} {exam_types}{web_trans} {variants} {phrases} {synonyms} {rels} {discriminations} 查词链接:
{link}
复制链接{phones}
{text}:[{value}]
{trans}
{trans}
{pos}
{tran}
{tran}
查看英英释义
{trans}
{pos}
{list} {tran}
{words}{word}同义词: {words}
{pos}
{words}
{exam_types}
单词变体
- {variants}
常用短语
- {phrases}
网络释义
{web_trans}
{tran}
{detail}
近义词
{synonyms}
{pos} {tran}
{words}
同根词
{rels}
{pos}
{words}
{word}{tran}
词语辨析
{discriminations}
{num}、{title}
{description}- {usages}
{description}