In this paper,The necessity of frequency tracking in ultrasonic cleaning equipmens is discussed.Based on a introduction on the principle of the mian circuit of the ultrasonic power supply for cleaning equipmens and the principle of PLL ,the output frequency of 74HC4046 is changed by a singlechip measuring the phase difference between volage and current.

本文討論了超聲波清洗機中自動頻率跟蹤的必要性国产热线99视频在线，在介紹超聲波清洗機的主電路原理、PLL鎖相環(huán)原理的基礎上，利用單片機檢測超聲電源負載的電流、電壓的相位差特级黄色淫片啪啪，來改變74HC4046 的輸出頻率，完成了變步長頻率跟蹤軟件設計一级黄色视频6f。

In this paper,the necessity of frequency tracking in ultrasonic cleaning equipmens is discussed.Based on introduction on the principle of the mian circuit of the ultrasonic power supply for cleaning equipmens and the principle of PLL,the output frequency of 74HC4046 is changed by a single chip measuring the phase difference between volage and current.The software of adaptive tracking technique with varied frequency steps is completed.

討論了超聲波清洗機中自動頻率跟蹤的必要性色精品亚洲自拍偷拍，在介紹超聲波清洗機的主電路原理、PLL鎖相環(huán)原理的基礎上亚洲av一级二级三级免费观看，利用單片機檢測超聲電源負載的電流色诱久久av无码电影网站、電壓的相位差无遮挡奶头污免费网站，從而改變74HC4046 的輸出頻率欧美精品黑人性XXXXWWW，完成了變步長頻率跟蹤軟件設計。

Agricultural materials are zoetic, so the process of threshing and cleaning are complicated and the mechanism of threshing and cleaning are illegible.

農業(yè)物料是有生命的材料人操在线视频97，其脫粒和清選過程較復雜性爱一级，關于脫粒和清選機理的研究還不夠深入。

Tumbling is the process of cleaning or abrading parts in a rotating container ,either with or without cleaning or abrasive materials .

滾動加工：滾動加工過程是在滾桶滾動中清潔或磨擦工件一级免费看，可用或不用研磨材料中文字幕黃色av。

The awesome cleaning power of carbonating solutions creates a powerful reaction that deep cleans carpets in a safe and gentle way...and because the bubbles do the work for us, Chem-Dry does not need to use the gallons of soapy cleaning chemicals that steam cleaners or do-it-yourself machines rely on so much.

這種超強的二氧化碳系統(tǒng)產生強烈地反應，溫柔和安全地深度清洗地毯在线观看资源av。

The company is engaged in the product altogether has 10 big series many kinds, deodorizes equipment deafen noise reduction equipment filter plant instruments and meters pump valve tubing other equipment including the raw water handling equipment sewage treatment equipment clean cleaning equipment water treatment chemical air-cleaning facility dust removal and so on.

公司從事的產品共有 10大系列多種久久99视频首页，包括原水處理設備、污水處理設備内地黄色视频久久免费、清洗清理設備95网站在线观看、水處理化學品、空氣凈化裝置欧美色色色色色色、除塵除臭設備人操人人操人人超碰、消音降噪設備、過濾設備小姐毛毛片黄片免费视频、儀器儀表看免费5XXAAA毛片om、泵閥管材、其他設備等。

The dry cleaning industry is a service industry for the cleaning of garments, draperies, leather goods , and other fabric items.

干洗行業(yè)是服務行業(yè)玖色视频在线，衣物日韩精品电影在线观看播放免费、織物、皮貨或其他布類的東西都可以干洗青草视频在线。

Although the first CT product launched only by the end of 2006, by now at the beginning of 2008, we have more than 50 items already, covering from cleaning clothes, window cleaning tools, floor squeegees, floor scrapper, mops and a wide variety of janitorial trolleys.

從2006年底開始推出歐洲專業(yè)標準及質量之專業(yè)清潔配套用具最近最新2019中文字幕免费看视频，如清潔服務車、水桶榨水車啪啪啪黄片视频海外版、玻璃清潔工具大黑吊日逼视频、地面清潔工具、專業(yè)設計之推水扒午夜福利小视频在线观看、手鏟刀等50多款產品日韩精品网站日韩在线播放视频免费。

Although the first CT product launched only by the end of 2006, by now at the beginning of 2008, we have more than 50 items already, covering from cleaning clothes, window cleaning tools, floor squeegees, floor scrapper, mops and a wide variety of janitorial trolleys.

從2006年底開始推出歐洲專業(yè)標準及質量之專業(yè)清潔配套用具如清潔服務車、水桶榨水車婷婷五月丁香六月综合、玻璃清潔工具日韩一级婬片A片免费手机版、地面清潔工具、專利設計之推水扒頭黄片地址免费、手鏟刀等50多款產品亚洲,欧美,中文,日韩,视频骚虎视频。

Care should be observed in cleaning and in removing residues of the cleaning medium.

在清理和清除過程中，應該細心的觀察清洗介質的殘留物国产精品呦交在线观看。