They must have appeared first as crusts and clinkers .
它们最初必然象面包的外皮和熔炉里的渣块。
But these oils cannot be used in the preparation of baked goods such as piecrusts , cookies , pastries , and pizza crusts .
但这些油并不能用于焙烤食品如馅饼皮、曲奇、面粉类糕点和比萨外皮。
The microstructure and for-mation of biological soil crusts in their early developmental stage .
荒漠地表生物土壤结皮的微结构及其早期发育特征。
Time effect of photosynthetic carbon fixation of cyanobacterial crusts in arid artificially revegetated areas .
干旱人工植被区藻结皮光合固碳的时间效应研究。
The granularity of cobalt-rich crusts is an important index to evaluate the crushing effect broken by spiral-cutting head , it is also the design gist of collecting and lifting system .
钴结壳破碎块度是衡量螺旋滚筒式采矿头破碎效果的重要指标,也是集矿和扬矿系统的设计依据。
When they is up to gravity balance ( i.e. flat surface and no micro-area transportation ) , under the action of weathering from exterior to interior , at the scope of the depth from the surface downwards , the weathering profiles are gradually reconstructed and take on the developing feature of normal weathering crusts .