查询词典 BN

The results showed that the soil catalase and dehydrogenase activities, soil microbial biomass N and microbial biomass C were restrain somewhat by four acetanilide herbicides at the beginning of cultivation, but can recover soon.

研究表明，培养初期丁草胺、乙草胺、丙草胺和异丙甲草胺对土壤过氧化氢酶和脱氢酶活性、对土壤微生物量氮和微生物量碳有不同程度的抑制，但均能很快恢复，四种供试酰胺类除草剂对土壤生态的影响不大，除草剂之间也没有表现出显著差异；培养初期rac-异丙甲草胺和S-isomer高浓度处理均比常规用药量处理对土壤酶、土壤BN和Bc的影响大。

The frictional behavior of samples was determined before and after sputtering, cohesion strength of samples was checked by scratch test.

结果表明在工具钢表面溅射镀BN薄膜后摩擦因数明显降低，从原来的0.8下降到0.6，具有良好的减摩效果；BN薄膜和T10钢基材之间有一定的结合强度。

The threshold voltage increases with the increase of the thickness in nanometer thickness range.

因此人们对BN膜的场发射进行了一些研究，C掺杂[10]和S掺杂[11]的BN膜场发射具有

Density and microstructure of the sintered bodies were investigatied. The main factors which affect the dentification of the composite were disscussed.

对BN-YAlON复合陶瓷进行了热压和无压烧结试验，对烧结体的密度变化和显微结构进行了研究，分析了影响BN基复合陶瓷致密化的主要因素。

The results indicate that polyborazine precursor prepared at 150℃ for 10 h and propylamine/isopropylamine molar ratio 2:1, could possess nearly linear molecule skeleton and he prone to melt spinnability. When melt at 90℃, the precursor fibers are prepared with average diameter 10-20μm and BC1.27 N1.52 H structure. After curing process and sintered in NH3 at 1200℃, the near-stoichiometric BN fibers was obtained, which proved this precursor is apt for preparation of BN fibers.

结果表明，当正丙胺／异丙胺摩尔比为2：1，聚合温度为150℃，反应时间为10h时，合成产物具有近似线性分子结构，熔点为90℃，具有良好的成丝性，可获得平均直径10~20μm，组成为BC1.27N1.52H的先驱体纤维，先驱体纤维再经不熔化处理及1200℃氨气高温锻烧等工艺可获得近化学计量比的氮化硼纤维。

Magnetron sput tering physical vapor deposition.

红外光谱分析表明， BN薄膜结构均为六角BN相。

BN party must now reform in order to be competitive and BN must be brave enough to admit own weaknesses and seek forgiveness for their past mistakes and arrogances.

国阵也必需勇于认错，就过去的过失和傲慢态度，向人民请求原谅。唯有这样，我们才能显示革新的诚意，去赢取选民的信任。

Toronto-based Nortel, North America's biggest maker of phone gear, was accused in lawsuits of a $3.2 bn (￡1.6 bn) accounting fraud that included improperly boosting sales by accelerating the booking of fiber-optic equipment contracts.

总部设在多伦多的北电网络是北美最大的电话设备制造商。

Ni-Cr/BN composite was produced in the active sintering process using nickel carbonyl,Cr2O3 and C powders as original materials,and hexagonal BN powder as solid lubricant.

在现代机械制造工程中，为发展热动力机械等先进设备，需要研制出能够在高温下使用的自润滑复合材料[1]。

Over the past seven years, China has been running current account surpluses of about bn to bn a year.

在过去7年中，中国每年的经常帐户盈余为100亿至400亿美元。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了