沃尔沃EC120D挖掘机(jī)的优点包括：1. 高效(xiào)节能：采用了先进的液压系统和发动机(jī)技术，提高了挖掘机(jī)的工作(zuò)效(xiào)率，减少了燃料消耗，节约能源。2. 灵活机(jī)动：具有较小的机(jī)身尺寸和良好的转向能力，可以适(shì)应狭小的工地环境，灵活性高。3. 操作(zuò)简便：配备了智能化的控制系统，简化了操作(zuò)步骤，提高了操作(zuò)人员的工作(zuò)效(xiào)率，降低了操作(zuò)难度。4. 舒适(shì)性好：挖掘机(jī)座舱采用了人体工程学设计，提供了宽敞舒适(shì)的工作(zuò)空(kōng)间，减少了操作(zuò)者的疲劳感。5. 安全性高：配备了先进的安全控制系统，包括重载保护、翻转保护等功能，提供了更高的安全性和稳定性。6. 维修(xiū)方便：设计合理的维修(xiū)接(jiē)口和易于拆卸的零部件，方便了维修(xiū)和保养工作(zuò)，减少了停机(jī)时间。总体而(ér)言，沃尔沃EC120D挖掘机(jī)具有高效(xiào)节能、灵活机(jī)动、操作(zuò)简便、舒适(shì)性好、安全性高和维修(xiū)方便等优点。

Advantages of Volvo EC120D excavator include: 1. Energy efficient: adopting advanced hydraulic system and engine technology, it improves the working efficiency of the excavator, reduces fuel consumption, and saves energy.2. Flexible and maneuverable: with small body size and good steering ability, it can adapt to the narrow construction site environment, and has high flexibility.3. Easy operation: equipped with intelligent control system, it simplifies the operation steps and improves the operator's working efficiency. It is equipped with intelligent control system, which simplifies the operation steps, improves the operator's working efficiency and reduces the operation difficulty.4. Good comfort: the excavator cockpit adopts ergonomic design, which provides spacious and comfortable working space and reduces the operator's fatigue.5. High safety: it is equipped with advanced safety control system, which includes the functions of heavy load protection and rollover protection, which provides higher safety and stability.6. Convenient maintenance: Well-designed maintenance interfaces and easy-to-remove parts facilitate repair and maintenance work and reduce downtime. Overall, Volvo EC120D excavator has the advantages of high efficiency and energy saving, flexible and maneuverable, easy operation, good comfort, high safety and easy maintenance.