1.   Emissions are measured on an open area test site which is free of objects which might reflect emitted signals.

2.   For two weeks, air quality officials and police agencies used a device that measured tail pipe emissions from passing cars to catch those that were belching excessive pollution.

3.   He used fluorescent spectroscopy in novel ways to determine the structure and movement of molecules by measuring the emission of light from a substance.

4.   The legislation calls for the EPA to explore ways of measuring mercury emissions.

5.   The program uses a relatively new process that measures otoacoustic emissions, which are low-level, inaudible sounds produced spontaneously by the inner ear.

6.   This new test, like the one that lawmakers abandoned and banned, would measure vehicle emissions of nitrogen oxides.

7.   What is being overlooked, he noted, is that developing nations are already measuring emissions and creating programs to control them.

8.   In addition, helicopters with instruments to measure sulfur dioxide emissions from the vents fly over daily.

9.   Scientists measure the emissions to determine the surface composition of the lunar soil.

10.   That means tackling such nitty-gritty issues as how to measure emissions from everything from factories to your average barnyard cow.

v. + emission >>共 157
reduce 39.00%
cut 11.49%
limit 5.11%
control 3.73%
curb 3.44%
regulate 1.96%
increase 1.67%
clean_up 1.18%
detect 1.08%
measure 1.08%
measure + n. >>共 1032
success 3.68%
performance 2.60%
progress 2.45%
level 2.40%
amount 2.02%
effect 1.78%
change 1.75%
number 1.34%
effectiveness 1.17%
impact 1.11%
emission 0.32%
每页显示:    共 11