1. Parallel folding can be operated for two times with the buckle plate. Its mode of folding includes parallel fold, concertina fold and letter fold. 在采用栅栏折页时可进行四次平行折页，折页方式为平行折、风琴折、包芯折；
2. Parallel folding can be operated for two times with the buckle plates. Its mode of folding includes parallel fold, concertina fold and letter fold. 在采用栅栏折页时可进行两次平行折页，折页方式为平行折、风琴折、包芯折；
3. Parallel folding can be operated for two times with the buckle plate. Its mode of folding includes parallel fold, concertina fold and letter fold. 在采用栅栏折页时可进行四次平行折页，折页方式为平行折、风琴折、包芯折；
4. If both limbs of overturned fold have same dip angle , we call this special overturned fold isoclinal fold. 如果倒转褶皱构造的两翼倾角相等，则可称这种特殊类型的倒转褶皱为等斜褶皱。
5. In the inner part of the rock, we found that stratigraphic gap and inversion, and the fold-shapes show a series of pitching fold, appressed homoclinal fold and recumbent. 盖层内部地层缺失、倒置现象普遍，褶皱形态表现为一系列倾伏褶皱—紧密同斜褶皱—平卧褶皱，据其形态特征可辩出两期性质不同褶皱幕。
网络释义
head fold-Cephalic fold 头褶;
head fold-Cephalic fold 头褶;
duo mill twin rolling mill two-high cogging mill two-high mill two-high rolling mill 二辊式轧机;
duo mill twin rolling mill two-high cogging mill two-high mill two-high rolling mill 二辊式轧机;
duo mill twin rolling mill two-high cogging mill two-high mill two-high rolling mill 二辊式轧机;
