負回輸 的英文怎麼說
中文拼音 [fùhuíshū]
負回輸
英文
negative feedback-
Starting from the frozen food and refrigeration principles and using comparative analysis method, we get conclusions that in the blow - frozen device, the open - mode, cold - quantity reclaim, low - press, direct - cooling air, absorbing - heat air cycle have the most significant reductions in food freeze dry cost, food hygiene, devices delicate, organizating air stream, non - electrical heat, high efficiency and safe refrigeration etc. the cold - cumulating and dryness tin is the equipment which applys the store - release characteristic of cold - cumulating stuff, ensures the higher efficiency of open - mode cold - quantity reclaim low - press direct - cooling air, shoulders conveyance of the saturated and frozen air to frozen storeroom to reduce dry cost of food and dry the cycling air to ensure safe and reliable
從食品冷凍和製冷原理入手，用對比分析方式得到了在吹風式凍結裝置中，開式回冷低壓直接冷卻吸熱循環空氣製冷機具有最大幅度降低食品凍結乾耗、確保食品冷凍安全、系統簡單、凍結庫小巧、氣流易於組織、無電機熱量、效率較高和製冷安全等結論。蓄冷乾燥器是通過蓄冷材料的蓄?釋冷特性，來保證開式回冷低壓直接冷卻吸熱循環空氣製冷機具有較高的效率，同時蓄冷乾燥器還擔負著輸送飽和低溫空氣至凍結庫以降低食品凍結乾耗和乾燥循環空氣以確保整機安全可靠工作的主要設備。The model controls the dynamic security of network information flow on four layers : security entrance layer requires user authentication and encapsulates security information flow ; social intelligence layer makes information flow to have the ability of self - sensing self - protecting and self - adjusting ; business layer carries out business logic in forms of transactions which can be submitted, processed and roll back, in order to provide real - time protecting and online recovering ; tcp / ip security layer ensures security communication for information flow
該模型分4個層次控制網路信息流的動態安全；安全入口層負責用戶的身份驗證和信息流的安全封裝；社會智能層賦予信息流自我感應、自我保護、自我調控的行為能力；事務層實現商業事務的提交、處理、回滾，提供實時保護和在線恢復機制； tcp / ip安全協議層則保障網路信息流的安全傳輸。This subject aim at designing a linear power amplifer whose output power is 40w for 225 - 450mhz band. but it seems not easy to finish the task because of this power amplifier own unique requirements including high output power, broad working frequency band, high linearity, and flat gain. due to the complexity involved, theoretically several soltuions are derived in the final scheme such as broadband matching technology, power - retreat, power synthesize, automatic power control and negative feedback. in addition, the design will be optimized by eda software and the final test result indicates that our design is successful
本課題的目標是研製一個輸出功率為40w的225 450mhz的線性功率放大器。由於該功放要求輸出功率大，工作頻帶寬，帶內增益波動小，線性度高，所以其終合設計難度大。鑒于這個原因，在理論設計上筆者採用了寬帶匹配、功率合成、功率回退、負反饋、自動功率控制等技術；在實踐中精心設計電路，並且配合eda軟體模擬，最終達到所要求的指標。It even influences the safe of the system, so transmission planning is a noticeable problem. after the reform of the power industry, the methods and content will be different from the past due to the uncertainties of investment, load and policies. this paper introduces some foreign experience and studies the methods of transmission planning in a deregulated environment
電力工業市場化改革后，新時期下的電網規劃由於要面對廠網分開產生的電網投資回收不確定性、負荷變化、政策變化等等諸多不確定性因素，在新的市場環境下如何確定輸電網的最優規劃方案，如何分析投資者的投資行為等仍是一個尚未解決的問題。They can play the same way at home. we saw a very, very tactical match in the first leg. of course everything changed with the sending off of asier del horno - 10 v 11 is not the same as 11 v 11 - but with another game ahead all is not lost for chelsea
在同切爾西隊首回合的比賽中，里傑卡爾德在中場使用了莫塔和埃德米爾森兩名防守型球員，而德科是唯一的一名進攻型中場球員，負責為前場三名前鋒輸送「炮彈」 。分享友人