Ling off ammonium bicarbonate , yean , chemical raw materials 灵产碳酸氢铵、液氨、化工原料。
3.
Production : monomer boron , danhuapeng , boron anhydride , without detectable ; hydrochloric acid , yean , ammonia water 生产：单体硼，氮化硼，硼酐，无水硼砂；盐酸，液氨，氨水。
4.
The ncep / ncar global reanalysis data about 55 yean ; ( 1948 - 2002 ) , the observed data about 2 years ( 1999 - 2000 ) , the meiyu data in the mid - lower reaches of the yangtze river and the precipitation data at 160 stations in china duing 1951 to 2000 are used in the paper . we present a preliminary study on the relationship between the precipitation total for meiyu and the summerly precipitation in the eastern side of the northwest china . then using nonhydrostatic version mm5 with one nested grid , the effect of the circulation patterns for meiyu on the summerly precipitation in the eastern side of the northwest china was simulated by numerical simulation of full physics 本文采用1948 2002年ncep再分析资料、 1999 2000年的全球地面、高空观测资料、 1951 2000年梅雨以及全国降水量资料，初步研究了长江中、下游地区梅雨事件与西北地区东部夏季降水的联系，并用mm5中尺度非静力模式模拟了多(少)梅雨环流型对西北东部夏季降水的影响；另外，还分析了梅雨与四川盆地、东南沿海地区夏季降水的联系。
