经过反复试验，这种灯成功地生产出来了。
This lamp was successfully produced after repeated experiments.
经过反复的工艺试验及一年多批量生产验证，成功地将熔融石英应用于精铸用低温蜡—硅溶胶型壳生产中。
By repeating technological tests and batch production tests for over a year, the fused silica was successfully used in the production of silica sol shell for low temperature wax precision casting.
他还说，“并不像我们想得那么简单，我们经历了很多轮的反复试验，才艰难地控制住了一根线条，手工画出了这样的杰作。
Mr Hwee Chong added: "It wasn't as easy as we thought. We went through many rounds of trial and error, painstaking drawing the masterpieces in one controlled line, by hand."
他还说，“并不像我们想得那么简单，我们经历了很多轮的反复试验，才艰难地控制住了一根线条，手工画出了这样的杰作。
Mr Hwee Chong added: "It wasn't as easy as we thought. We went through many rounds of trial and error, painstaking drawing the masterpieces in one controlled line, by hand."
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