二项的

Some conclusions are followed:(1)the reaction ratio of boron is 12% in primary combustion;(2)the degree of agglomeration can be decreased adopting boron coated with AP;(3)the content of oxygen is very important for afterburning efficiency;(4)the afterburning efficiency will be changed with different air-gas ratio;(5)the head distance of after-burning chamber is increasing, the circumfluence in the head of after-burning chamber is stronger and the distribution of fuel backward the after-burning chamber is more well-proportioned.(6)the combustion efficiency of DR will be improved by increasing the area of fuel nozzle.(7)the angle between dual air-inlets have complex influence with the combustion of DR.

通过本项研究，取得如下结论：（1）一次燃烧硼反应比例在12～15％之间；（2）AP包覆硼，可以降低硼结团度，有利于一次燃烧喷射效率的提高，也有利于硼在补燃室进行二次燃烧；（3）进气空气中的氧含量对二次燃烧非常重要；（4）对于一定配方的含硼富燃推进剂，不同的空燃比，二次燃烧效率不同；（5）补燃室头部距离的增加能增强补燃室头部回流以及提高燃料在补燃室后段分布的均匀性；（6）在一定范围内，增加一次燃气喷嘴面积能提高冲压发动机燃料的燃烧效率；（7）进气道夹角对补燃室内燃料的燃烧影响复杂。

First order coefficient of the phase error function can be estimated by sensor-based motion compensation. Second or higher order term of phase error function could be estimated and cancelled by autofocus technique.

传统由感测器执行之运动补偿功能只能测量到相位的一次项系数，如果加上自动聚焦法，则可以将二阶以上的误差项消除。

Bis auf Augustinus-Hieronymus (Breslau, 1879-81); NORDEN, Die antika Kunstprosa (Leipzig, 1898), II; there is an immense number of studies of the language of particular Fathers [eg HOPPE on Tertullian (1897); WATSON (1896) and BAYARD (1902) on Cyprian; GOELTZER on Jerome (1884); REGNER on Augustine (1886), etc.], and indices latinitatis to the volumes of the Vienna Corpus PP.

之二auf奥古斯丁- hieronymus （布雷斯劳， 1879年至1881年）；北欧，模具antika kunstprosa （莱比锡， 1898年），二是有巨大的多项研究的语言，特别是父亲[如洛尔霍普对戴尔都良（ 1897 ）；沃森（ 1896年）和贝亚德（ 1902年）就塞浦路斯； goeltzer对杰罗姆（ 1884 ）； regner对奥古斯丁（ 1886 ）等] ，以及指数latinitatis以厚厚的维也纳语料库页。

Careful considerations are taken for forcing terms on the free surface and body surface in the integral equations for second order problem.

对于二阶问题中的水面积分强迫项和物面积分强迫项，本文采取有效的方法进行了处理。

The results showed that five-flap palatoplasty have advantages to two-flap palatoplasty in prolongation and movability of soft palate, velopharyngeal function and speech improvement.

以上几项检查的结果表明，五瓣法组在软腭延长度及运动度、腭咽闭合和语音等方面的功能均优于二瓣法组，二组间存在显著性差异。

We prove that thecontributions of the quadratic combinations of the extrinsic curvature of the horizon arezero by defining a pair of vectors which orthogonal to the event horizon and dual to oneforms.

计算表明：当取一对与视界面正交且与1-形式对偶的矢量后，视界外曲率的二次项对熵的贡献项为零。

When thepolynomial has at least two simple real roots,sequences of critical values of timedelays corresponding to each positive root can be derived.

而当该多项式有二个及二个以上的简单正根时，稳定性切换次数主要取决于两方面：一是该多项式的正根的个数，二是该多项式的每个正根对应的临界时滞序列中相邻两项差的大小关系来确定。

The Olympic Games were part of the Panhellenic Games , four separate games held at two- or four-year intervals but arranged so that there was at least one set of games every year.

奥林匹亚竞技大会是泛希腊竞技的一部分，古希腊人在二到四年之间，会分别举办了四项不同的竞技，但是至少每年会安排一项比赛项目。

Bis (P—bromobenzylamino) ethane and 1,2—bis (m—Iodobenzylamino) ethane may be prepared by condensation of the corresponding halo benzaldehyde with ethylenediamine and followed by catalytic hydrogenation of the Schiff's bases over Pto_2 in glacial acetic acid solutions: Both Ⅱa and Ⅱb may react in neutral mediam with aldehydes to form well—defined crystalline tetrahydro—imidazole, which may be served as derivatives of identification for aldehydes: Under the same condition, however,Ⅱb may ...

用1，2-二乙烷与二十余种醛类作用，得到有固定熔点的晶体衍生物，它们的熔点分布在85—210℃之间，产率为40—96％，这试剂与甲基酮类在相同条件下无反应，因此，它可作为鉴定醛类的专属试剂。 2。上述衍生物用稀盐酸在室溫处理，能发生水解，可以定量地收回原来的醛，因此这试剂又可作为分离醛类的试剂。 3。上述衍生物可以用非水滴定法半微量地测定其分子量可作为鉴定醛类的另一项参考数据。 4.1，2-二乙烷与醛类能生成晶体衍生物，但这试剂也与甲基酮在同样条件下发生反应，所以不适合作为鉴定醛类的专属试剂。

Two researches proved the great harm of plastics In the first study, researchers conducted urine sample tests on pregnant women, measured the level of dibutyl phthalate in the urine samples and then compared them with the physiological indexes of their respective babies.

两项研究证明塑料危害大在第一项研究中，研究人员对孕妇进行了尿液采样，分别测量其中所含邻苯二甲酸盐的水平，并将数据与各自所生的婴儿的生理指标进行对比。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。