out of bandwidth

Bandwidth怎么理解?
Bandwidth (this month) 719.58 Megabytes 是每个月的带宽总计吗?虚拟主机一般每个月带宽上限是多少?为什么我的新站下午是600多M带宽,现在就719M带宽了?怎么消耗的这么快?是不是被盗链还是被黑了?

英语翻译
The high sensitivity of bandwidth to the profile shape poses great challenges to the profile control in the fiber manufacturing process.
关键在：profile shape 和profile control 搞不懂!
1.With the LP approximation,light propagating in a fiber with the index profile of (1）【注：（1）是一个公式】
2.The light carrying capacity depends on the index delta,the core diameter,and the index profile shape.
3.Similarly,any deviations in the index profile from the optimum alpha value will decrease the fiber bandwidth.
这里的the index profile又是什么意思?

英语翻译
the median half magnitude bandwidth of cells tuned to frequencies
higher than 5 cycles/degree is 1.2 octaves,whereas the median for
cells tuned to frequencies smaller than 2 cycles/degree is 1.7 octaves.
其中median half magnitude bandwidth不明白
tuned octaves不明

英语翻译
The high sensitivity of bandwidth to the profile shape poses great challenges to the profile control in the fiber manufacturing process.
关键在：profile shape 和profile control 搞不懂!
另：
1.With the LP approximation,light propagating in a fiber with the index profile of (1）【注：（1）是一个公式】
2.The light carrying capacity depends on the index delta,the core diameter,and the index profile shape.
3.Similarly,any deviations in the index profile from the optimum alpha value will decrease the fiber bandwidth.
这里的the index profile又是什么意思?

Bandwidth Limit Exceeded
The server is temporarily unable to service your request due to the site owner reaching his/her bandwidth limit.Please try again later.
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Apache/2.2.16 (Unix) mod_ssl/2.2.16 OpenSSL/0.9.8e-fips-rhel5 mod_python/3.3.1 Python/2.4.3 mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635 Server at www.***.com Port 80
哪位知道这个是什么原因?帮我解决下呗

激光器谱宽与脉宽的关系
激光器的谱宽就是光谱范围,就是说波长成分.应该可以叫bandwidth或者linewidth,以我的理解激光器的带宽、线宽、谱宽就是一个概念.
脉宽是一个脉冲持续多长时间.按理说二者没有什么关系,但是脉宽不同谱宽确实不同,从时域频域的分析也能看出来.比如说飞秒激光器的脉宽谱宽积基本就是一个常数.如果没法测脉宽,用光谱仪测脉冲激光的谱宽也能反映脉宽大小.与脉宽对应的频域范围跟光谱范围不是一个概念吗?
如果不是一个概念,脉冲激光的谱宽确实比连续激光大.或者可以说短脉冲激光器不可能是单色的,必定会有很大的光谱范围?
这个问题相当纠结啊,

在一个OSPF协议的设备接口上,通过输入命令“ bandwidth 64”进行了配置,则该边距的OSPF Cost值是下列哪
一个.（ ）
A.10 B.1562 C.64000 D.1