| ประโยคภาษาจีน : 中文句子 | 
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|  tuī dǎo推导  le了  hán yǒu含有  pèi jīn lǜ配筋率  de的  yòng yú用于  gāng jīn hùn níng tǔ钢筋混凝土  jǔ xíng矩形  liáng zhèng梁正  jié miàn截面  kàng wān抗弯  chéng zài lì承载力  náo dù挠度  jí及  zuì dà最大  liè fèng裂缝  kuān dù宽度  jì suàn计算  de的  biǎo dá shì表达式 | 
| Calculated expressions including reinforcement ratio are deduced, which are applied to calculate flexural strength, deflection and maximum value of crack width of RC beam with rectangular section. |