11. The receiver may be enclosed in a glass vacuum chamber . 12. The NASA researchers then exposed the samples to atomic oxygen in a vacuum chamber . 13. Their patented'pulsed-plasma'process takes place under low pressure within a vacuum chamber at room temperature. 14. There are also cold plasmas, usually generated inside vacuum chambers , at low pressure regimes. 15. Jack searches desperately for his wife, finally finding her inside the locked vacuum chamber . 16. The vacuum chamber in an accelerator can be used as a waveguide for radio-frequency transmission. 17. Lawrence's hunch about the effect of the air molecules in the vacuum chamber was confirmed. 18. The vacuum chamber is brought to a very low vacuum, the same as outer space. 19. The wafer is then placed in a vacuum chamber , and exposed to the ion beam. 20. Cutting-edge research that needs an ultra high vacuum requires a more sophisticated form of vacuum chamber .
