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matron    音标拼音: [m'etrən]
n. 妇女,主妇,保姆

妇女,主妇,保姆

matron
n 1: a married woman (usually middle-aged with children) who is
staid and dignified
2: a wardress in a prison
3: a woman in charge of nursing in a medical institution

Matron \Ma"tron\, n. [F. matrone, L. matrona, fr. mater mother.
See {Mother}.]
1. A wife or a widow, especially, one who has borne children;
a woman of staid or motherly manners.
[1913 Webster]

Your wives, your daughters,
Your matrons, and your maids. --Shak.
[1913 Webster]

Grave from her cradle, insomuch that she was a
matron before she was a mother. --Fuller.
[1913 Webster]

2. A housekeeper; esp., a woman who manages the domestic
economy of a public instution; a head nurse in a hospital;
as, the matron of a school or hospital.
[1913 Webster]

{Jury of matrons} (Law), a jury of experienced women called
to determine the question of pregnancy when set up in bar
of execution, and for other cognate purposes.
[1913 Webster]

47 Moby Thesaurus words for "matron":
Eve, Frau, abbess, better half, chatelaine, common-law wife,
concubine, dame, daughter of Eve, distaff, domina, donna, dowager,
feme, feme covert, femme, first lady, frow, gentlewoman, girl,
goodwife, goody, governess, grande dame, great lady, helpmate,
helpmeet, homemaker, housewife, lady, lass, madam, married woman,
matriarch, milady, mistress, mother superior, old lady, old woman,
rib, squaw, vrouw, wahine, weaker vessel, wedded wife, wife,
woman


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  • Return Loss in Transmission Lines | Tutorials on Electronics | Next . . .
    Return loss quantifies the reflection efficiency of a transmission line by measuring the ratio of incident power to reflected power It is expressed in decibels (dB) and derived from the reflection coefficient Γ, which characterizes the impedance mismatch between the transmission line and the load
  • Mastering Return Loss in RF Engineering - numberanalytics. com
    Learn the fundamentals of return loss, its importance in RF engineering, and how to measure and optimize it for improved system performance
  • Reflections on Return Loss
    For example, at 12 GHz the Superport adjacent path MM5130 Return Loss is typically 17 dB Assuming 20 dB Return Loss for interconnecting sections then resultant Return Loss could go to ~11 55 dB
  • Return loss - Wikipedia
    If a transmission line is correctly matched to a load, the reflected power will be zero, no power will be lost due to reflection, and "return loss" will be infinite
  • How much return loss is too much?: Rule of Thumb #12 - EDN
    This rule of thumb enables us to estimate the maximum amount of return loss allowed for a component like a connector or package Spoiler summary : A return loss smaller than -13 dB won’t affect the transmitted signal
  • VSWR and Return Loss | Tutorials on Electronics | Next Electronics
    While VSWR describes the ratio of maximum to minimum voltage amplitudes along a transmission line, return loss measures the fraction of incident power reflected due to impedance discontinuities The two are mathematically related through the magnitude of the reflection coefficient (Γ)
  • Transmission Line Loss - Microwaves101
    Here we will review some of the math for calculating the RF losses (attenuation) of transmission lines over frequency We'll guide you to some of our other pages that show calculations of attenuation of different transmission line geometries
  • S-Parameters and the Reflection Coefficient
    S 11 represents the return loss of a device, indicating how much of the input power supplied to the device reflects back to the input port Ideally, there should be no reflected power, and 100% of the power should be delivered to the device
  • What is Return Loss? - everything RF
    Return loss (RL) is the ratio of the reflected power to the incident power, in decibels (dB) Now, let us investigate the physical meaning of return loss
  • Transmission Line Performance Calculator - Jesse Loewen
    Calculate VSWR, Reflection Coefficient, and Return Loss for transmission lines Evaluate signal integrity with media-specific loss characteristics for coaxial, twisted pair, and fiber optic cables





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