掩蔽電壓英語怎麼說及英文單詞

㈠ 英語高手幫我翻譯一下，關於電路的。

翻譯質量可保證，不過太長了，加點分吧？
1 Introction
1.引言
THE USE of conventional, unsymmetrical amplifier circuits in biomedical engineering is very limited, because of their inadequacy in suppressing power-line interference.常規的不對稱放大器電路在生物醫學工程中的使用是有限的，因為它們在抑制電力線路的干擾上存在不足之處。 Because one of the patient electrodes is directly connected to the amplifier
signal ground and the other is a high impedance point, the interference
current flows only through the grounded electrode. 因為病人的電極中有一個直接連接到放大器信號接地，另一個是高阻抗點，所以干擾電流只流過被接地的電極。The grounded electrode impedance voltage drop is amplified and leads to circuit saturation or masking of the useful biopotential
signal. 該接地電極阻抗的電壓降被放大，並導致電路飽和，或者對有用生物電位信號的掩蔽。
Many biosignal acquisition devices could benefit from the use of only two electrodes. 很多生物信號採集裝置可以通過僅採用兩個電極而得到好處。Electrocardiogram monitoring in intensive care wards, ambulatory monitors, defibrillators etc.
are among the most common examples. 在重症監護病房中的心電圖監控、門診監測器、除顫器等是最常見的例子。
The most widely used technique for biosignal amplification is based on an instrumentation amplifier first-stage design, because of its ability to suppress the common mode interference
(NEUMAN, 1998). 最廣泛使用的生物信號放大技術是基於一種儀表放大器的一級設計，因為它能抑制共模干擾（Neuman，1998）In two－electrode instrumentation, the
amplifier inputs must have a differential impedance that is as high as possible to avoid signal attenuation. 在雙電極儀器應用中，放大器的輸入必須有盡可能高的差分阻抗，以避免信號衰減。On the other hand, the amplifier should have reasonably low common mode impedance, to create a path for the common mode interference
currents without significant voltage drop, keeping both inputs in their specified operating voltage range. 另一方面，放大器的共模阻抗應該合理地低，以便為共模干擾電流創造一個通路而不致有明顯的電壓降，從而將兩個輸入都保持在它們規定的工作電壓范圍內。
THAKOR and WEBSTER (1980) introced a bootstrapped input stage. However, it has an inctive common mode input impedance, resulting in a very poor common mode
input current range, especially for higher frequencies. Thakor和Webster（1980）引入了一個自舉（bootstapped）輸入級，產生了很差的輸入共模電流范圍（特別是在較高的頻率下）
A circuit for a two-electrode, non-differential amplifier was developed (DOBREV, 2002), the performance of which isquasi-equivalent to the differential amplifier described by DOBREV and DASKALOV (2002). Dobrev於2002年開發了一種用於雙電極、無差動放大器的電路，其性能准-等效於Dobrev和Daskalov（2002）所描述的差分放大器。
Because the body as signal
source is floating and, in addition, the modern biopotential amplifiers are isolated, it is possible to drive actively one of the electrodes to the circuit common potential and thus to
balance the flowing interference currents. 因為作為信號源的人體是浮動的，而且現代的生物電位放大器是隔離的，所以有可能主動地將電極中的一個激勵到電路的公共電位，並因此來平衡流過的干擾電流。
Now, a very simple, low-cost circuit of a two-electrode nondifferential
amplifier is suggested, where the interference current balancing is achieved by one operational amplifier
(OA) and two parallel RC networks.現在人們提出了一種很簡單而又廉價的雙電極、無差動放大器的電路，其中，干擾電流的平衡是靠一個運算放大器（OA）和兩個並聯的RC（阻容）網路實現的。