该产品粘结强度高，无泌水现象，抹灰后免养护，减少了工序，节约用水，提高工效。
High caking intensity, no water seepage phenomenon, maintains exemption after the plastering, working procedure reduced, water used saved, and work efficiency enhanced.
在我国北方一年两熟地区推广实行保护性耕作技术体系过程中，玉米收获后免耕播种小麦是一直困扰的难题。
Planting wheat without tillage after maize harvesting is a hard problem through the extension of conservation tillage technology system in the district of two crops one year in north China.
根据现有的资料还不足以确定初免者以及与之相对的经过很长一段间隔时间后再次接种疫苗者的不良反应发生率。
Current data are insufficient to define the incidence of adverse events in primary vaccinees as opposed to individuals re-vaccinated after a long interval.
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