例句與造句

1. Travel mechanism of each track consists of a variable two - speed piston motor , a planetary reducer and a parking brake ， travel brake buffer valve is mounted on motor to reduce hydraulic shock
   每側(cè)履帶的行走機(jī)構(gòu)由一個(gè)變量雙速柱塞馬達(dá)、行星減速器和制動(dòng)器組成，行走制動(dòng)緩沖閥與馬達(dá)一體安裝，吸收了行車時(shí)由于制動(dòng)或載荷變化帶來的液壓沖擊。
2. It's difficult to find buffer valve in a sentence. 用buffer valve造句挺難的