亚洲成人一区在线_久久综合九色综合欧美98_久久精品一区二区三区不卡牛牛 _亚洲成人在线网站

Rss & SiteMap

通信圈 http://m.sese521.com/bbs

通信圈,中國通信門戶,是通信界最權威的通信論壇,提供通信新聞資訊、通信技術、產品、增值業務、解決方案等多種服務。
共7 條記錄, 每頁顯示 30 條, 頁簽: [1]
[瀏覽完整版]

標題:[原創]當電力通信遇上高壓直流輸電【求解】

1樓
whitecamel 發表于:2010/7/22 19:39:23

請問各位大師:

當電力通信遇上高壓直流輸電會出現什么情況呢??

也就是說能不能在直流輸電上加載傳輸信號???

2樓
whitecamel 發表于:2010/7/22 20:34:15
到底有沒有人知道答案啊???
3樓
新月彎刀 發表于:2010/7/27 8:34:54
直接傳輸絕對不允許。
4樓
飛翔123 發表于:2010/10/10 20:17:40

樓上請詳解一下何謂 直接傳輸不允許?

謝謝!以前還沒想過這個問題。

5樓
山雨夜來漲 發表于:2010/12/26 23:34:01
Coating is the critical step among marking construction, sealcoating equipment and please pay more stict attention to its operation procedures. Coating procedures and precautions: 1) Check pavement marking equipment and inspect the construction equipment carefully and assure that they are in good condition. Please do pre-marking, and check pavement striping machines the color, thickness, width, volume and glass beads spread volume. if necessary, adjust the parameters and asphalt striping machine. 2) Coating should be start after the primer drying thoroughly. Or, the solvent will penetrate the unhardened paint film, resulting in solvent bubbles, field striping machine and marking contamination. 3) To ensure the visibility of markings at night, please spread glass beads when coating construction. It is demonstrated that half of the diameter of field marking equipment glass beads embedded in coating that the reflect effect is the best. But we should know that the glass bead will be buried in the coating if line marking equipment the paint temperature is high, while the glass beads spreading speed is fast ,and the glass beads can not adhered to coating firmly and is easy to come off if the paint temperature is low, while line markers glass beads spreading speed is slow, for at that time the coating is almost solidified, which will affect the whole reflect effect. Glass beads should be spreaded uniformly, generally speaking, 0.3~0.5kg on square meter is proper. If line striping equipment the glass bead is too excessive, it will make the markings' color bad and cause uneven visual effect, and is easy for dust to stick on it and effect the visibility.
6樓
山雨夜來漲 發表于:2010/12/27 17:50:19
Coating is the critical step among marking construction, sealcoating equipment and please pay more stict attention to its operation procedures. Coating procedures and precautions: 1) Check pavement marking equipment and inspect the construction equipment carefully and assure that they are in good condition. Please do pre-marking, and check pavement striping machines the color, thickness, width, volume and glass beads spread volume. if necessary, adjust the parameters and asphalt striping machine. 2) Coating should be start after the primer drying thoroughly. Or, the solvent will penetrate the unhardened paint film, resulting in solvent bubbles, field striping machine and marking contamination. 3) To ensure the visibility of markings at night, please spread glass beads when coating construction. It is demonstrated that half of the diameter of field marking equipment glass beads embedded in coating that the reflect effect is the best. But we should know that the glass bead will be buried in the coating if line marking equipment the paint temperature is high, while the glass beads spreading speed is fast ,and the glass beads can not adhered to coating firmly and is easy to come off if the paint temperature is low, while line markers glass beads spreading speed is slow, for at that time the coating is almost solidified, which will affect the whole reflect effect. Glass beads should be spreaded uniformly, generally speaking, 0.3~0.5kg on square meter is proper. If line striping equipment the glass bead is too excessive, it will make the markings' color bad and cause uneven visual effect, and is easy for dust to stick on it and effect the visibility.
7樓
常樂 發表于:2011/1/9 21:48:32
直流電壓沒有頻率如何實現調制呢?
共7 條記錄, 每頁顯示 30 條, 頁簽: [1]


Powered By Dvbbs Version 8.3.0
Processed in .02930 s, 3 queries.
主站蜘蛛池模板: 欧美日韩不卡在线视频| 免费国产成人av| 日本精品一区二区三区四区| 美女999久久久精品视频| 不卡日韩av| 奇米影视首页 狠狠色丁香婷婷久久综合| 国产中文字幕亚洲| 欧美日韩一区二区三| 日韩美女视频中文字幕| 色乱码一区二区三在线看| 日韩视频欧美视频| 青青精品视频播放| 久久亚洲精品国产亚洲老地址| 日韩精品视频在线观看视频| 午夜久久久久久久久久久| 日韩中文字幕不卡视频| 亚洲xxxx在线| 免费在线观看日韩视频| 欧美二区在线看| 日韩一区二区三区资源| 日本黄网免费一区二区精品| 久久免费99精品久久久久久| 国产素人在线观看| www..com日韩| 久久综合久久网| 国产精品对白刺激久久久| 色综合久久av| 久久国产精品99久久久久久丝袜 | 欧美激情亚洲综合一区| 热久久这里只有精品| 国产女精品视频网站免费| 国产一区二区视频在线观看| 国产精品一区二区性色av| 在线一区亚洲V| 狠狠干视频网站| 日韩视频在线免费观看| 国产精品美女久久久免费| 欧美激情综合色| 日韩中文字幕在线播放| 国产日韩在线一区二区三区| 日本一区二区黄色|