manual method meaning in Chinese

手工方法
手语法

Manual methods for ambient air quality monitoring
环境空气质量手工监测技术规范
Gold lump cores - increment sampling and sample preparation - manual method
金块矿取样和制样方法手工方法
Methods of sampling iron ores - manual method of increment sampling
铁矿石取样方法.第1部分:手工增量取样方法
Petroleum and liquid petroleum products - temperature measurements - manual methods
石油和液化石油产品.温度测量.手工方法

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