频响法对测试人员的专业技术水平要求高，不利于现场普及。
Due to high requirement of personnel ability, it is difficult to popularize frequency response method on fields.
公司有一批专业技术水平较高、并曾从事过多年环保工作的工程技术人员。
A number of companies have a higher level of expertise, and has for many years engaged in environmental protection work of the engineering and technical personnel.
项目经理应具有过硬的专业技术水平，较高的管理能力，以及一定的人文素质。
A project manager should have high level professional technology standard, management ability and humanistic quality.
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