The back seat of the car folds down. The photographer asked me to fold my arms. Fold the top of the carton back, and tear along the dotted line.

Folds form under varied conditions of stress, pore pressure, and temperature gradient, as evidenced by their presence in soft sediments, the full spectrum of metamorphic rocks, and even as primary flow structures in some igneous rocks. A set of folds distributed on a regional scale constitutes a fold belt, a common feature of orogenic zones.

The meaning of FOLD is to lay one part over another part of. How to use fold in a sentence.

FOLD definition: 1. to bend something, especially paper or cloth, so that one part of it lies on the other part, or…. Learn more.

必应词典为您提供folds的释义，美[foʊld]，英[fəʊld]，n. 折叠；褶痕；(起伏地的)凹处；【地】褶皱； v. 折叠； 网络释义： 皱褶；小褶皱；褶曲；

Fold, in geology, undulation in stratified rocks. Folds vary widely in size; some may be hundreds of kilometers across, whereas others measure just a few centimeters or less. Stratified rocks were formed from sediments deposited in flat horizontal sheets, but in …

The table folds up when not in use. 这桌子不用时可以折叠起来。 牛津词典

29 Folds Elizabeth Johnson. Anatomy of a Fold. A fold is a geologic structure that is formed by layers or beds of rock being bent or folded. The plane that marks the center of the fold is called the axial plane. The line which marks where the axial plane intersects the surface of Earth is called the hinge line.

The chair folds up for easy storage. 椅子可以折叠，方便存放。 fold up 摔倒 美国、比喻、非正式 （细分） Jim folded up when the prosecutor discredited his story. 当检察官质疑他的说法时，吉姆屈服了。

The features which aid in finding out the stratigraphic top of a bed and hence the synclines and anticlines are drag folds, rock cleavage, cross-bedding, symmetrical ripple marks and graded bedding. Engineering Considerations of Folds :