I . j53 - 630a models controlling method is shifting fork , plain type platform and portal brake . ii . j53 - 630b model is improved on base of j53 - 630a model 一j53 - 630a型的操縱方式為撥叉操縱,簡易式平臺,門剎車。
The difference between the concept of weak subgrade and soft soil subgrade is presented . and the former is divided into three types according to formation causes , namely mountainous type , plain type and coastal type 軟弱地基依成因可分為山區型、平原型、濱海型三種,宣大線屈山區型,京秦線屈平原型。
At the base of analyzing the factors which affect the village residential land readjustment potential , the article classed yanqing county villages residential land as plain type and mountainous area type , and choseed three village residential land readjustment mode by analyzing the condition of village residential land readjustment 在對影響農村居民點整理潛力因素分析的基礎上,把延慶縣農村居民點用地劃分為平原區和山區兩種整理類型區。通過對延慶縣農村居民點整理條件分析,選取了延慶縣規劃期內農村居民點整理的三種模式。