| ประโยคภาษาจีน : 中文句子 | 
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|  yǒu shí有时  tū lún zhóu凸轮轴  zhí jiē直接  ān zhuāng安装  zài在  qì gāng gài气缸盖  shàng上  bìng qiě并且  bú yòng不用  yáo bì摇臂  kòng zhì控制  fá mén阀门  gōng zuò工作 | 
| Sometimes the camshaft is fitted directly into the cylinder head and operates on the valves without rockers . |