机械英汉词典（M） ... main oil gallery cylinder block &head || 汽缸体 -汽缸盖主油道 main oil gallery cylinder head || 汽缸盖主油道 main operating system || 主操作系统 ...
双语例句
1
Mobile phones are the maininvention of modern technology.
手提电话是现代科技很重要的一个发明。
2
The abstract shall state briefly the main technical points of the invention or utility model.
摘要应当简要说明发明或者实用新型的技术要点。
3
But, in fact, I really want to be a scientist, my dream is to work in the science museum, the main research and invention, can produce some machines to reduce the financial burden of human.