沃尔沃EC120D挖掘机的优点包括：1. 高效节能：采用了(liǎo)先进的液压系统(tǒng)和发动机技术，提高了(liǎo)挖掘机的工(gōng)作效率，减少了(liǎo)燃料消耗，节约能源。2. 灵活机动：具有较小的机身尺寸和良好的转向能力，可以适应狭小的工(gōng)地环境，灵活性(xìng)高。3. 操作简便：配备了(liǎo)智能化的控制系统(tǒng)，简化了(liǎo)操作步骤，提高了(liǎo)操作人员的工(gōng)作效率，降低了(liǎo)操作难度。4. 舒适性(xìng)好：挖掘机座舱采用了(liǎo)人体工(gōng)程学设(shè)计，提供了(liǎo)宽敞舒适的工(gōng)作空间，减少了(liǎo)操作者的疲劳感。5. 安全性(xìng)高：配备了(liǎo)先进的安全控制系统(tǒng)，包括重载保护(hù)、翻转保护(hù)等功能，提供了(liǎo)更高的安全性(xìng)和稳定性(xìng)。6. 维(wéi)修方便：设(shè)计合理的维(wéi)修接口和易于拆卸的零部件，方便了(liǎo)维(wéi)修和保养工(gōng)作，减少了(liǎo)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、操作简便、舒适性(xìng)好、安全性(xìng)高和维(wéi)修方便等优点。

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.