曹生俊是黄委会设计院地质处主任工程师,也是一位技术革新能手。七十年代初,他曾和其他同志一起研制成功了自动打锥机,在国内得到广泛应用。去年他又同郭六法等同志一起,改进了V.P.R.H钻机冠状钻头,提高了工效,降低了费用。 Cao Shengjun is chief engineer of the Yellow River Institute of Design Institute of Geology, but also a technological innovator. In the early seventies, he worked with other comrades to successfully develop automatic tapping machines and was widely used domestically. Last year, together with Comrade Guo Liufa and other comrades, he improved the V.P.R.H drilling crown bits to improve work efficiency and reduce costs.