导频滤波器

pilot filter的用法和样例：

例句

This paper presents a theoretical study of the tunability of frequency selective filter extended cavity semiconductor lasers.本文分析选频滤波器负载外腔半导体激光器的调谐特性。
An external pop protection screen may be necessary when close-miking vocalists.The use of a low frequency cutoff filter may also be effective.当麦克风很靠近演唱者时，可能需要加一个外部静电噪音保护屏，使用一个低频截频滤波器也可能有效。

EXPLORATIONS - Wiley Post: The First Pilot to Fly Around the

EXPLORATIONS - Wiley Post: The First Pilot to Fly Around the World Alone By Paul Thompson Broadcast: Wednesday, September 14, 2005 ANNOUNCER: Now the VOA Special English program, Explorations. Today S

发表于:2018-12-01 / 阅读(95) / 评论(0)

Explorations

掌握英语发音第一章第三节

[00:00.00][s],[ ][ ] [00:38.61]sea/sheet/chicken [00:42.66]Exercise One: Word Conparison [00:47.62]Listen to the following words from your tape and repeat. [00:52.98]sip ship sane shane watched washed [01:01.23]lass lash least leashed chin [01:09.09]

发表于:2018-12-03 / 阅读(127) / 评论(0)

掌握英语发音

365个英语简短小故事-335. The Vacuum Cleaner Filter(2)

But the HEPA filter for Olivers Vibe got dirty very quickly. And, it was not cleanableit was simply replaceable. When it turned filthy brown, Oliver went back to Target to buy a new filter. Oddly, Target sold the F15 belt for the Vibe, but not the fi

发表于:2018-12-11 / 阅读(70) / 评论(0)

365个英语简短小故事

Indian Scientists Invent Nose Filter to Protect Against Air Pollution

From VOA Learning English, this is the Health Lifestyle report. In parts of India, it is not uncommon to see people wearing a mask over their nose and mouth. The capital, New Delhi, has some of the world's dirtiest air. The pollution was a call for a

发表于:2019-01-03 / 阅读(65) / 评论(0)

2018年VOA慢速英语(一)月

2007年VOA标准英语-Water Filter Wins Developer Engineering Prize

By Tabinda Naeem Washington, D.C. 21 May 2007 Two years ago, the National Academy of Engineering established the Grainger Challenge Prize for Sustainability. This $1 million award was designed to challenge the world's scientists to develop a practica

发表于:2019-02-03 / 阅读(92) / 评论(0)

2007年VOA标准英语（五月）

311 counties to pilot China's hospital reform

BEIJING, June 26 (Xinhua) -- China has nominated 311 counties or county-level cities in a program to pilot reform of the country's public healthcare facilities, the Ministry of Health announced on Tuesday. The national initiative includes 83 counties

发表于:2019-02-21 / 阅读(69) / 评论(0)

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