单型

Furthermore, it is proved that, under the sufficient condition, the multistep Runge-Kutta method is GP d-stable if and only if it is A-stable.

在文献 [2 ]中，Bellen等考虑了中立型延迟微分方程解析解及单步Runge -Kutta方法的渐近稳定性。

The PCR-SSP may be used for genotyping in mutational mononucleatide, and it has a good prospects.

PCR-SSP可对具有单核苷酸突变的基因分型，应用前景良好。

The nanotube transistors exhibited n-type semiconductor characteristics, and the conductance of nanotube FETs can be modulated by more than 4 orders of magatitude at room temperature.

显示了纳米器件实际应用的可能性。7利用单根CNx／C纳米管作为半导体材料制备了n型的场效应晶体管，器件的电子密度在105～106 cm-1之间，亚阀值斜率为300-800mV／decode之间，开关比约为10000。

The results showed that for the two peony cultivars, before flowering and during flowering period the day rate changes of net photosynthesis rate were up to the maximum at 12:00, and there were no photosynthesis "sleep at noon" phenomenon, therefore, during the two period, the curves of net Pn of the peony leaves only have one peak.

结果表明：两品种在花前、花期2个不同发育时期的净光合速率日变化曲线在12：00左右达到最大值，无明显的光合午休现象，日变化曲线呈"单峰"型。

We constructed phylogenetic tree of 8 species based on NJ method.

根据单倍型构建了中国8 个黄牛品种的NJ 分子系统树。

In order to study the factors related to Enterobius infection among per-schoolchildren, a structural questionnaire with multi-stages and a random sampling was designed to interview parents of 702 pre-schoolchildren. The questionnaire included personal information of the children: their educational background and parents' occupation; the status of their housing; their handwashing habits, and their frequency and habits of bathing, etc. In addition, the children's pinworm infections were examined using two-consecutive-day adhesive cellophance paper perianal swabs. Variables causing the pinworm infection among infected and noninfected children were analyzed by x2-test and multi-variable tests including discriminant analysis and stepwise multiple regression.

为了解学龄前儿童蛲虫感染之因素，以结构型问卷多步骤随机抽样访视702名学龄前儿童的家长，问卷的内容包括：儿童个人资料、儿童父母亲教育程度、职业、住屋情形、卧室分配情形、手部卫生习惯、洗澡习惯等，并以连续两天玻璃胶纸肛围擦拭法〈two-consecutive-day adhesive cellophane paper perianal swabs〉检查儿童的蛲虫感染情形，儿童蛲虫感染与各单变项的相关，以卡方检定〈x2-test〉分析，而多变项的分析则以判定分析〈discriminant analysis〉及逐步复回归〈stepwise multiple regression〉进行分析。

By using center manifold theorem and normal form of maps, we also present formal proofs of the supercritical flip bifurcation at the bifurcation point. Above this threshold, there is a characteristic sequence of bifurcations, leading to chaotic dynamics, which implies that the dynamical behavior of the single species model with birth pulses are very complex.

利用单参数族映射的中心流形定理、正规型和指数积分函数的性质，得到了具非线性出生率或具密度依赖成熟率的混杂矩阵模型正平衡态的存在性和稳定性、超临界分支以及各种复杂现象甚至混沌。

In clinic, 6 patients with new type Ⅱ odontoid fracture were directly internally fixed with a 4.0-4.5 mm compressing screw.

临床选用6例新鲜齿状突Ⅱ型骨折病人，采用单枚直径4.5 mm的加压螺丝钉内固定治疗。

A girl of sweet spring bud hem chest paillette girded spins dress, using a magnificent baby feels dye-in-the-wood sequins bouquet of chest design, give a person with Bling Bling ablaze visual effect, soft and comfortable spins material is very suitable for the wear build, springsummer peng peng feeling bracts type design modification bottom curve, whether waist single wear or mix cotton T good-looking and type, young girls sweet vogue temperament!

甜美女生春夏必败款的束胸亮片花苞下摆雪纺娃娃洋装，运用了华丽感十足的亮片束胸设计，给人以Bling Bling闪亮的视觉效果，轻柔舒适的雪纺材质非常适合春夏季的穿搭，澎澎感的花苞式下摆设计起到修饰腰身曲线的功效，无论是单穿或是混搭棉T都好看又有型，尽显年轻女生们的甜美时尚的气质！

By utilizing kiwi fruit pulp powder, flour specially used for biscuit s, fruit sugar, plant palm oil, sweet agent and raising agent as raw materials, the compound formulation of kiwi fruit raw fiber low-sugar biscuit s is carried out through the single factor test and orthogonal experiment.

以猕猴桃果肉粉末、饼干专用粉、果糖、植物棕榈油、甜味剂和膨松剂为主要原料，通过单因素试验和正交试验对低糖型猕猴桃粗纤维饼干进行配方设计。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。