They conducted their first rollovertest in 1959. -in 1960, they patented the safety steering system.
他们在1959年进行了首次翻滚试验。-而在1960年，他们的安全转向系统获得专利。
2
The J-turn and fish-hook rollovertest are simulated and the simulation result can expressed the rollover performance and can give some reference to the prototype testing.
对车辆侧翻多种工况进行了仿真研究，仿真结果可以准确的表达真实车辆的侧翻特性，为实车试验提供了参考。
3
In that test, the Volt was subjected to a simulated side-impact collision into a narrow object like a tree or pole followed by a rollover, the agency said.