外加

We studied effects of additives in the allylic amination reaction. We found that4NF could improve the reactivity and enantioselectivity.

对于烯丙基胺化反应，我们研究了外加添加剂对对映选择性的影响，我们发现四丁基氟化铵的加入可以大大提高反应速度及对映选择性。

The intermittent alternative transverse magnetic field has influence on the swing frequency of welding arc.

外加横向间歇交变磁场改变了电弧的摆动频率。

This is the exactly answer why the effect of amine additive is not good when used in highway.

这正是胺类外加剂在高速公路上使用效果存在疑问的根本原因。

5M ∟ 50 × 50 of angle iron, the middle wearing the 3 φ 12 steel, plus protective net.

5m ∟ 50 × 50的角铁，中间穿三道φ 12的钢筋，外加防护网。

The angular frequency of the disturbing force called the impressed frequency .

扰动力的角频率称为外加频率。

Consider a uniform magnetic field parallel to the tube axis, and it changes the angular momentum from to .

在奈米碳管的管轴方向外加与管轴平行的磁场，会对角动量造成影响，由原本的不连续值改变为连续值的。

The influence of anneal temperature, thickness and voltage on the ferroelectric were investigated in the end.

对PZT薄膜进行了铁电性能测试，研究了退火温度、薄膜厚度及外加电压对铁电性能的影响。

The effect of pressure of methane and voltage on conductivity of Baijiao anthracite has been studied.

研究了四川白皎无烟煤电导率与甲烷压力和外加电压的关系。

Group was an idealistic belief in social progress and the universality of rights, coupled with intense anti-Communism.

纽约城市学院群体最重要的遗产是一种对社会发展及权利普世性的理想主义信念，外加强烈的反共色彩。

Using 4 V DC electrical action,the possibility of the solid proton electrode, antimonic acid , gettering of tritium from air is investigated.

用锑酸作消气材料，压制成消氚电极，在适当外加条件下，考察了锑酸作消氚材料直接将含氚废空气中的氚除去的可能性。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。