7.There are diversified specifications, such as one-doored, two-doored and four-doored,and other special specifications can also be made through redesigning and refitting.
有单、双、肆门等多种式,还可安需求设计或改装其他特殊规格式式样。
8.Chapter four is the research on diversity architectures of agriculture technique extension mode, analyzing the necessity that diversified mode constuct. several magistral modes is comparative studied.