portable machine tool operator community is mounted on a column abbattibile and posizionabile laterally to the work plan.

• 1. 安装在施工机械驾驶室上的操作员防护结构 [P] . 中国专利： CN1873116A . 2006-12-06
• 2. 安装在座位上的侧面碰撞气包 [P] . 中国专利： CN1159401A . 1997-09-17
• 3. machine operator interfilare with rotary tool for hydraulic drive. mounted laterally between the axles of a tractor, or [P] . IT1276310B1 . 1997-10-28

  机译： 机器操作员与液压驱动旋转工具之间的相互联系。横向安装在拖拉机轴之间，或

• 4. machine operator interfilare with rotary tool to drive hydraulic mounted laterally between the axles of a tractor, or [P] . ITFO940037U1 . 1996-06-12

  机译： 机器操作员与旋转工具相互配合，以驱动横向安装在拖拉机轴之间的液压，或者

• 5. machine operator interfilare with rotary tool for hydraulic drive. mounted laterally between the axles of a tractor, or [P] . ITFO940046A1 . 1996-06-12

  机译： 机器操作员与液压驱动旋转工具之间的相互联系。横向安装在拖拉机轴之间，或

• 1. Bayesian networks modeling for thermal error of numerical control machine tools [J] . Xin-hua YAO, Jian-zhong FU, Zi-chen CHEN 浙江大学学报（英文版）（A辑：应用物理和工程） . 2008,第011期
• 2. Beijing No. 2 Machine-Tool Works [J] . 中国对外贸易：英文版 . 1997,第009期
• 3. Changjiang Machine-Tool Works [J] . 中国对外贸易：英文版 . 1997,第009期
• 4. Qiqihar No.2 Machine Tool Works [J] . 中国对外贸易：英文版 . 1994,第007期
• 5. Qiqihar No.1 Machine Tool Works [J] . 中国对外贸易：英文版 . 1994,第007期
• 6. Experimental Study on Dynamic and Static Work of Shoulder-Mounted Portable Equipment Operators [C] . Zhaofeng Luo, Meng Kang, Peng Zhang, International Conference on Man-Machine-Environment System Engineering . 2020
• 7. Problem solving of machine operators within the context of everyday work: Learning through relationship and community. [D] . Brockman, Julie Lynn. 2004
• 8. The reduction methods of operators radiation dose for portable dental X-ray machines [O] . Jeong-Yeon Cho, Won-Jeong Han 2012
• 9. : "This paper deals with the functionality of the flaked stone assemblages from several Neolithic sites of the NE of the Iberian Peninsula. The chronological framework ranges from the mid-6th to the mid-4th millennium cal. BCE, which corresponds to the Early and Middle Neolithic. This long period ranges from the arrival of the first farming communities in the Iberian Peninsula, around 5600-5500 cal. BCE, to 3600-3500 cal. BCE, two millennia later, when Neolithic communities had stably occupied most of the available territory, from the mountainous areas of the Pyrenees to the coastal areas of the Mediterranean.In this context, the NE of the Iberian Peninsula is one of the areas where a major number of use-wear analyses have been carried out, especially for what concerns the Neolithic period. This is mainly due to the interest shown by the directors of the excavations and by the Spanish use-wear specialists as well; both participated and cooperated in order to enlarge the number of contexts studied, making the NE of the Iberian Peninsula one of the areas of Europe with the largest number of ‘functional studies’. As a result, today we have a reliable picture of the type of lithic tools used by the first farming groups, how they were used, and which needs they were satisfying.The methodology employed for this type of analysis is today broadly shared by most use-wear specialists. A stereoscopic microscope is used together with a reflected-light microscope for the analysis of the archaeological specimens. Afterwards, the observed use-wear traces are compared with the traces from experimental tools. This study primarily made use of the tools preserved at the ‘Traceoteque’ of the Institución Milà y Fontanals of the CSIC of Barcelona.This paper presents the results obtained for the different types of analysed sites and the relative lithic assemblages. In this way, tools from different contexts are compared: open-air sites, caves and rock-shelters, pit-sites, burials, and mining sites. Such a diversity of contexts allowed for the exploration of the existence of recurrences and differences in the functionality of the lithic tools from one site to another. The results obtained have also provided information on some aspects related to the economic processes carried out at the different sites, caves, rock-shelters and open-air contexts. It has been possible to gain fresh data on the types of tasks carried out and their relative importance for each site, their relation with the geographical and environmental context and the natural resources available there. In addition, analysing tools recovered from burials – mainly individual inhumations – provided information on the relationships between the buried individuals and the working tools, in particular exploring the relationships between sex and age patterns and the types of tools deposited as goods.In conclusion, use-wear analysis allowed for the exploration of a variety of issues; from technical aspects related to the production and management of the lithic resources to social aspects related to the subsistence activities and the individuals that carried them out." [O] . Gibaja Bao, Juan Francisco, Mazzucco, Niccolo 2015