系箝 的英文怎麼說
中文拼音 [xìqián]-
The purposes of the present study were to investigate ( 1 ) the hemodynamic effects of agmatine in anaesthetized dahl salt - sensitive ( ds ) hypertensive and dahl salt - resistant ( dr ) rats ; ( 2 ) the effect of agmatine on vascular tension in the isolated aortic artery of rats and the underlying receptor mechanism ; ( 3 ) the effects of local injection of agmatine on femoral, renal, and mesenteric vascular beds by constant flow perfusion method ; ( 4 ) the effect of agmatine on l - type calcium current ( / ca - t ) in rat ventricular myocytes with whole - cell configuration of the patch - clamp technique ; ( 5 ) the effects of agmatine on free intracellular calcium concentration ( ca2 + d of isolated rat ventricular myocytes
（ 3 ）採用後肢、腎臟和腸系膜動脈在體恆流灌注法，觀察向灌流環路中直接注射胍丁胺的血管效應。 （ 4 ）應用全細胞膜片箝技術，觀察胍丁胺對大鼠心室肌細胞l -型鈣通道電流（ i _ （ ca - l ） ）的影響。 （ 5 ）用fluo3 - am負載分離的大鼠心室肌細胞后，由激光共聚焦法測定單個心室肌細胞[ ca ~ （ 2 + ） ] _ i的熒光強度，觀察胍丁胺對分離大鼠心室肌細胞內游離鈣濃度（ [ ca ~ （ 2 + ） ] _ i ）的影響。A novel method based on a map of noise figure and gain is proposed to analyze efficiently the dependence of the noise figure and gain for edfas on the edf length and the pump power. the characteristics of various edfas are studied and compared. secondly, some important parameters are introduced to describe the characteristics of edfas
文中從理論上系統分析設計了結構參數對各種edfa性能的影響，最後通過實驗驗證；第四，針對波分復用系統要求edfa必須具備增益鎖定功能，提出採用單根光纖光柵的方法來箝制l - bandedfa的增益。That is, showing the static electricity controlling in the design ; eradicating every possible channels of resulting in the static electricity in the production ; safely discharging ; validly moderation and testing the energy of the static electricity in time, the article introduces the method which synthesize applications to connecting to the ground, discharging the power, clamping the voltage and shielding, and assisting with efficient trainings, managements and operation procedure, construct a complete protection to the static electricity which will exclude static electricity, the terror of the current electronics industry out of it
即在設計中體現靜電控制思想、在生產中杜絕一切可能產生靜電的途徑、安全的泄放、有效的中和及實時的靜電檢測，綜合運用接地、泄流、屏蔽和箝位等技術，並輔之以一套行之有效的培訓、管理制度和操作程序，構成一個完整的靜電防護體系，將靜電這個電子工業中的「恐怖分子」拒之門外。Double forward converter ( dfc ) has many advantages, such as inherent anti - break - though capability, auto clamping the switch voltage etc. regarding the excellent reliability, dfc is one the most widely used topology in the industrial applications, especially for low output voltage area, such as telecommunication energy systems and welding power supply
雙管正激變換器具有內在抗橋臂直通的優點，能使開關管上的電壓自動箝位在輸入電源電壓。由於其可靠性高，電路設計簡單，因而成為目前在工業中應用最普遍的變換器結構之? ，特別是適合於輸出電壓較低應用場合，比如通信系統中的一次電源和弧焊電源。Based on studying of the multi - level technique, a variable frequency speed regulation system based on the diode clamped three - level inverter is introduced in this thesis in detail. it includes ac - dc - ac main power circuit, snubber circuit, isolated driving circuit by optical fibre, delay time circuit on powering, sampling circuit of current and voltage, protection circuit and etc. a distributed power system ( dps ) which can reinforced the system ’ s security is developed to solve the power supply of the whole system
本文在研究多電平技術的基礎上，研製了一套以二極體箝位式三電平逆變器為基礎的變頻調速系統，包括:交-直-交主功率電路，緩沖電路，光纖隔離驅動電路，上電緩沖延時電路，電流、電壓采樣電路，保護電路等。Some protection strategies are proposed to prevent the vsc - hvdc from over - voltage and over - current damage in most fault conditions. digital simulation is done to verify the validity of the proposed protection strategy. ( 3 ) a control strategy for a diode clamped three - level vsc - hvdc system is proposed and is testified by digital simulation using netomac
（ 3 ）在比較和研究適用於vsc - hvdc容量提升的一些策略的基礎上，論證了目前提升vsc - hvdc容量的一個現實途徑是採用三電平vsc ，並提出了基於二極體中點箝位型三電平vsc的hvdc系統的一種控制策略，設計了相應的控制器，模擬結果證實所設計的控制器具有良好的穩定性和穩態控制精度。Study on a high performance control for three - level npc voltage - source rectifier
三電平中點箝位整流器系統建模及基於李亞普諾夫直接法的控制方法研究分享友人