1) alum coal
煤垩
2) cretaceous coal field
白垩系煤田
3) chalkiness
[英]['tʃɔ:kinis] [美]['tʃɔkɪnɪs]
垩白
1.
Regularity of Rice Chalkiness Occurrence and its Modified Ways;
稻米垩白的发生规律及改良的可能途径
2.
The influential factors and hereditary improvements on the chalkiness of rice grains;
稻米垩白的影响因素及遗传改良
3.
Genetic Variance of Chalkiness of Different Grain Positions in a Panicle;
稻穗不同部位籽粒垩白程度变异分析
4) chalk
[英][tʃɔ:k] [美][tʃɔk]
白垩
1.
A study on time－dependent behavior of the North Sea unsaturated chalk;
非饱和白垩压缩变形依时特性的研究
2.
Both the engineering practice and laboratory tests show that structural collapse in petroleum chalk tends to occur during water injection.
工程实践和室内试验都表明 ,油田白垩遇水后极易发生颗粒结构崩溃现象。
3.
The characteristics between calcareous clay and chalk and marlite have been compared in mineral composition and structure etc.
对一种新的非金属矿产———钙土矿的地质特征、矿石特征、物化性能及其在工业领域的应用前景作了介绍，并从矿物组成、结构等方面与白垩、泥灰岩作了对比。
5) red chalk
红垩
6) chalking
[英][tʃɔ:k] [美][tʃɔk]
起垩
补充资料：白垩系
见白垩纪。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条