The contact fatigue tester has high contact stress, small volume, low noise, low consumption of test sam-pl, stable driving system and reliable results.
认为该装置具有接触应力大，体积小，噪声小，一次试验耗油量小，试验系统传动稳定，试验结果可信等优点。
2
The cymbal hydrophone has small volume and high sensitivity, but its reception performance is not stable enough, with narrow receiving frequency band.
钹式水听器体积小，灵敏度高，但是接收的性能不够稳定，接收频带比较窄。
3
After the founding of the market five months ago, the trading volume of those listed shares has been improved obviously and the stock price is becoming stable.