沃尔沃EC120D挖掘机的(dí)优点包括：1. 高效节能：采用了先(xiān)进的(dí)液压系统和发动机技术，提高了挖掘机的(dí)工作(zuò)效率，减少了燃料消耗，节约能源。2. 灵活机动：具有较小的(dí)机身尺寸和良好的(dí)转向能力，可以适应狭小的(dí)工地环境，灵活性(xìng)高。3. 操作(zuò)简便：配备了智能化的(dí)控制系统，简化了操作(zuò)步骤，提高了操作(zuò)人员的(dí)工作(zuò)效率，降低了操作(zuò)难度。4. 舒适性(xìng)好：挖掘机座舱采用了人体工程学设(shè)计(jì)，提供了宽敞舒适的(dí)工作(zuò)空间，减少了操作(zuò)者的(dí)疲劳感。5. 安全性(xìng)高：配备了先(xiān)进的(dí)安全控制系统，包括重载保护、翻转保护等(děng)功能，提供了更高的(dí)安全性(xìng)和稳定性(xìng)。6. 维修方(fāng)便：设(shè)计(jì)合理的(dí)维修接口和易于拆卸的(dí)零部件，方(fāng)便了维修和保养工作(zuò)，减少了停机时间。总体而言，沃尔沃EC120D挖掘机具有高效节能、灵活机动、操作(zuò)简便、舒适性(xìng)好、安全性(xìng)高和维修方(fāng)便等(děng)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.