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- Silica aerosol particulates with excellent properties were prepared by way of sol-gel process under normal pressure with formamide as catalust and waterglass as gel pioneer population. 采用甲酰胺作为反应催化剂,水玻璃作为凝胶先驱体,利用溶胶凝胶法在常压下制备出了性能优良的硅石气凝胶微粒,原材料便宜,合成工艺简单。
- Hippophae rhamnoides L.subsp.sinensis is a heliophyte tree,so that some scholars consider it as a pioneer population,but others regard that the tree regenerate well in natural conditions. 中国沙棘属于阳性树种,因此有些学者将其视为群落演替过程中的先锋种群,而有些学者的研究表明它在自然状态下更新良好。
- He was a pioneer in the use of X-rays. 他是最早使用X光的人。
- This city has a population of more than 1,000,000. 这个城市人口超过一百万。
- A desert has no settled population. 沙漠没有固定的居民。
- An innovative leader in a field; a pioneer. 创始人某一领域内的革新领袖; 先驱
- She was descended from a pioneer family. 她来自一个早期的开拓者家庭
- There was a steady increase in population. 人口在不断增长中。
- What is the population of this country? 这个国家的人口是多少?
- Disease has decimated the population. 疾病使大部分人死亡。
- The Young Pioneer saw the blind man across the road. 这个少先队员扶着盲人过了马路。
- The population of the island has sunk from100 to20. 这个岛上的人口从容不100人减少到了20人。
- What is the population of Ireland? 爱尔兰人口有多少?
- There was a swell in the city's population. 该市出现过人口膨胀。
- In ten years the city's population expanded by 12%. 十年之中,该城人口增加了百分之十二。
- The population of this country rose by 10 percent. 这个国家的人口增长了百分之十。
- What is the total population of Japan? 日本的总人口为多少?
- Mr. Bowen is a pioneer in the US trade with China. 伯恩先生是一位美中贸易的开拓者。
- The town has a population of ten thousand. 这个镇有一万人口。
- He was the pioneer of photography. 他是摄影术的倡导者。