查询词典 A.N.

Properly using nitrogen help to enhance a quality but scarcity or excessiveness of N is disadvantageous to it. Tea prater NH4(superscript +)-N to NO3(superscript -)-N. Phosphorus can promote the of flavone, tea-Polyphenols, amino acid and theme.

适量的施氮对茶叶品质有较好的促进作用，施氮不足或过量则会时茶叶品质产生极大的不良影响；此外，茶树有喜铵耐铵的特性，施用NH4-N肥有利于改善茶叶品质。

In this study, we evaluated the efficacyof preanesthetic proton pump inhibitor (PPI; oral rabeprazol)use in patients receiving regular H2-antagonisttherapy for more than 4 wk. Forty-eight patients with assumedcomplete tolerance to H2 antagonists undergoing elective surgerywere recruited and randomly assigned to receive either a preanestheticPPI (rabeprazol 20 mg; n = 24) or H2-antagonist (H2 group; roxatidine75 mg; n = 24) at 9:00 pm on the day before surgery and 2 hbefore the induction of anesthesia.

本次研究，作者评价了长期规则使用氢离子拮抗剂（口服法莫替丁，疗程大于4周）治疗的病人，麻醉前使用质子泵抑制剂（ PPI ；口服雷贝拉唑）的有效性。48位择期手术的病人假设能够完全耐受氢离子拮抗剂，随机分为两组，一组接受 PPI （口服雷贝拉唑20mg ； n ＝24），另一组接受质子泵抑制剂（口服罗沙替丁75mg ； n ＝24），服药时间分别为，术前一天晚上9点和麻醉诱导前2小时。

Using the estimates of character sums over Galois rings and the trace de scription of primitive sequences over Zpe, we obtain an estimate for the frequency of the occurrences of any element in Zpe in one period of a primitive sequence, which is better than Kuzmin's results[1] if n ＞ 4e, where n is the degree of the generating polynomial of the primitive sequence.

范淑琴 ，韩文报文研究了Zpe上本原序列的元素分布。利用Ga，lois环上的指数和估计和本原序列的迹表示，得到了Zpe中各元素在本原序列的一个周期中出现频率的一个估计。当n＞4e时(n为本原序列生成多项式的次数)。我们的估计优于Kuzmin的结果[1]。

In Particular, we prove that N is the equality relation on S if and only if S is a semilattice and N is the universal relation on S if and only if 5 is the only principal filter.

其次，证明了N是偏序半群S中的恒等关系当且仅当S是一个半格，N是偏序半群S中的泛关系当且仅当S自身是S中唯一的主滤子。

METHODS: The 15 hybrid dogs were randomly divided into 2 groups. In the experimental group (n=9), a hole was drilled at the slope beneath the tibial plateau to reach the medullary cavity. The cavity was enlarged by an appropriate drill to confirm the size of the cavity. The absorbable polyamide intramedullary rods were inserted from the hole in tibial superior extremity, and the fracture was anatomically reduced with the rod passing through the fracture. Two locking nails, which were cylinder polyamide rods, were respectively located 2 cm from the cutting site, in the distal and proximal ends. Auxiliary plaster external fixation was performed for 4 weeks. In the control group (n=6), quincunx intramedullary nails of the same diameter with 4 pre-drilled holes were accordingly inserted into the cutting segment, and 2 screws were locked in the distal and proximal ends, respectively.

15只杂种犬随机分为2组，实验组(n=9)：在距离胫骨平台下斜坡处钻孔入髓腔，用合适钻头扩大髓腔，确认髓腔大小，从胫骨上端开孔插入聚酰胺钉，解剖复位骨折端并使该钉通过骨折处，在距离截骨处2 cm处的远近端分别锁上2枚锁钉，锁钉为圆柱形聚酰胺棒，辅助石膏外固定4周；对照组(n=6)：同样插入相应直径的、已预钻4孔的梅花形髓内钉截段，在骨折端的近端及远端分别锁2枚螺钉，辅助石膏外固定4周。

In order to study the effect of N levels on growth of summer maize under different drought degrees, a field experiment was carried out under rainproof sheds. There were seven drought treatments in which soil drying lasted 0,7,12,17,22,27,32 days and three N levels including N 0,140,280 kg/ha in this experiment.

在田间小区遮雨条件下，采用有交互作用的双因素试验方法，设置了连续干旱03~2 d 7个水分处理及N 0、1402、80 kg/hm^2 3个氮肥处理，研究施氮水平对不同干旱程度夏玉米生长的影响。

We can use a random sample of size n from the population,{(xi1, xi2…, xik; yi): i=1,…,n}, where i denotes observation, and j= 1,…,k denotes the jth regressor.

我们可以使用总体的一个容量为n的随机样本，{(xi1， xi2…， xik； yi)： i=1，…，n}，其中i 代表第i个观察值，j=1，…，k代表第j个回归元。

The results show that dynamic softening is easy to occur in these ingots and flow stress becomes steady finally; the material constants of hot deformation are procedural parameters that stress-level coefficient α, strain rate sensibility exponent m and deformation activation energy Q are all increased with strain increasing, while stress exponent n is decreased gradually; the values α and m of the alloy homogenized are the biggest and the value n is the smallest, dynamic softening effect of the alloy is the most obvious, which can deform evenly; influence of strain on the value Q of the alloy homogenized is a little and the average value of Q is only 176.5kJ/mol, so the alloy is easy to deform; the alloy matrix shows the regular recrystallization grains when the strain is 50%; dislocation cell structure re-formed in the grains with increase of strain.

结果表明：经不同处理的Al-1Mn-1Mg合金均易发生动态软化并最终呈现稳态流变特征；热变形材料常数是过程量，随应变量的增加，应力水平参数α、应变速率敏感性指数m和热变形激活能 Q 随之增大，而应力指数 n 则逐渐减小；均匀化退火后，铝合金的α和m值最大而n值最小，动态软化效果最明显且变形均匀，在该状态下，铝合金的 Q 值受变形量影响小，平均仅为176.5kJ/mol，易进行热变形；当应变量为0.7时，基体呈现规则的再结晶晶粒组织，随着应变量的增加，晶内重新形成了位错胞结构。

N-methy-pyrrolidone is named as NMP for short and nitrogen heterocyclic ring compound.

N-甲基吡咯烷酮，又称N-甲基-2-吡咯烷酮或N-甲基-a-吡咯烷酮，简称NMP，属于氮杂环化合物。

Methods A new basis, to be called H-Bézier basis, is constructed for the space Γ=span{1, t, t^2,…t(superscript n-2), sinh t , cosh t}(n≥2) by an integral approach.

在代数双曲混合函数空间Γ=span{1，t，t^2，…，t(上标 n-2)，sinh t，cosh t}(n≥2)中构造一组规范基，基于该规范基函数定义曲线。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐