emission

• The greatest amount of exhaust emissions are produced at idle and during low-speed operation .
  排气中最大量的排放物是在怠速和低速运行时产生的。
• This section will deal with the emission observed from flawed material during a risingload test .
  本节讨论在缺陷材料升载试验中所观察到的声发射。
• Both ionization and excitation lead to electronic transitions that may be the emission of light .
  电离和激发都将导致可能伴随有光发射的电子跃迁。
• One obvious remedy is to reduce emissions of sulfur and nitrogen oxides to the atmosphere .
  减少硫氧化物和氮氧化物向大气的排放量是一个有效的治理措施。
• The interested user is encouraged to refer to "guide for compiling a comprehensive emission inventory" .
  有关的用户请参考“编译综合排放量编目单指南”。
• Much astrophysical information is to be obtained from the intensity of absorption or emission lines .
  许多天体物理信息要根据吸收线或发射线的强度才能取得。
• Acoustic emission is the characteristic and irreversible sound emitted by a material when it is deformed .
  声发射是当材料变形时所发出的特殊的不可逆的声响。
• In cloudy skies the downward emission of the atmosphere is augmented by radiation from the clouds themselves .
  对于多天天空，大气的向下发射被来自云本身的发射所加强。
• The aerometric and emissions reporting system is comprised of input forms, files, programs and reports .
  大气测量和排放量报表系统，包括输入格式，文件、程序和报告书。
• An electron can drop from a higher level to a lower one with the emission of a packet of electromagnetic radiation .
  利用电磁辐射束的辐射，能使电子从高能级落到低能级。