对设施土壤中长期施有机肥与氮肥对土壤中碱解氮含量的影响进行了研究。
The influence of application of organic and nitrogen fertilizer on the content of alkali hydrolysable N in fertilities soil was studied.
能应用于一般工况下的蒸汽、煤气、溶剂、中酸、中碱及大多数易磨损介质。
It can be used for general service steam, gases, solvents, mild acids, alkalis and most abrasive liquids.
水泥中碱含量主要来自熟料，影响熟料减含量的主要因素是石灰石和粘土质原料中的碱含量。
The alkali contained in cement comes mainly from clinker, and the major factors influencing the clinker alkali content are the alkali contents in limestone and clayey raw material.
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