oil_adding_machine_有道手机词典

1.The utility model relates to a portable oiling machine used for a distribution transformer, which belongs to a portable oiling device for adding oil to distribution transformers.
本实用新型涉及一种配电变压器用便携式加油机，它属于一种为配电变压器加油用的便携式加油装置。
dict.yoduao.com