调查发现，公司对安全设备的投资严重不足。
The inquiry found that the company had seriously underspent on safety equipment.
最近我对电信设备的市场作了一番调查。
I did a lot of research in the market of telecommunications equipment lately.
调查了国内30家润滑脂生产企业的生产装置能力、设备及工艺现状。
The current plant capacity, equipment and technology status of 30 domestic grease producers are investigated.
最近我对电信设备的市场做了一番调查。
Recently I have conducted a research in the market of telecommunications equipment.
最近我对电信设备的市场做了一番调查。
Recently I have conducted a research in the market of telecommunications equipment.
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