时间:2022-06-15 20:02:00
n.
1.希腊语的第三个字母〔Γ,γ = 〔英国〕 G, g〕;第三位的东西;【虫类】γ纹蛾;【天文学】(亮度居于第三位的)γ星。
2.〔 pl.〕γ量,微克(=100万分之一克)。
3.【物理学】伽马(磁场强度单位=10
4.【摄影】灰度(非线性)系数。
the 3rd letter of the Greek alphabet
a unit of magnetic field strength equal to one-hundred-thousandth of an oersted
This interaction can produce gamma rays or secondary protons .
这种互相作用能够产生射线或第二代质子。
In a vacuum, gamma rays travel in straight lines with the speed of light .
真空中,射线以光速沿直线前进。
Strictly speaking, it is not possible to absorb gamma rays completely .
严格来说,不可能把射线全部吸收掉。
Further, both gamma rays and neutrons can produce harmful effects in living organisms .
此外,r射线和中子都能损害生物组织。
An irradiation of 60 sec. limits the build-up of excessive gamma radiation levels .
采取60秒辐射限定了剩余伽玛射线水平的增高。
However the major portion of the initial gamma radiation is derived from the two latter sources .
可是绝大部分早期辐射来自后两种来源。
If gamma particles are present, potential differences of several thousand volts can be generated .
如果存在粒子,可能产生几千伏的电位差。
As a result, there is less attenuation of the gamma rays from the fission products .
这样一来,从裂变产物中发射出来的射线的减弱就要少一些。
Consequently, gamma rays will reach a particular target on the ground from many directions .
这样,射线必将从四面八方射达某一指定的地面目标。
The instantaneous gamma rays are produced almost entirely before the weapon has completely blown apart .
瞬时射线差不多是在武器完全飞散之前就全部产生了。