可保持的

Other factors that were found to have positive effects on soil nutrientsinclude the multiple cropping index and the practice of plowing stalks back into theland.

相对于土地调整形成的地权不稳定，土地交易权不完整更不利于保持土壤的可持续生产能力，对农业土壤肥力有明显的负面外部效应。

Except one case, we can prove that the new graph operation preserving fully orientability.

我们会证明除了一个特殊的未知情况之外，这个新的图运算能保持图的可全定向性质。

We also obtain a new judgement theorem for hereditarily metaLindelof space and paracompact space. In addition, we give a depiction for g-metrizable space from a new direction with σ—ωHCP closed weak base.

f空间和仿紧空间的判定方法，并给出了g-可度量空间关于σ-弱遗传闭包保持闭弱基的一个刻画，进一步丰富和发展了广义度量空间的基本理论。

These experiments show that phycoerythrin conjugates are a valuable class of fluorescent reagents for analysis of cell surface antigens.phycoerythrin conjugates can be used together with fluorescence-labeled reagents for two-color analysis.

结果 用R-PE标记的抗CD 3 、抗CD 4 、抗CD 8 抗CD 19 、抗CD 45 等单抗试剂，检测正常人外周血白细胞表面相应抗原的表达，流式细胞仪分析表明，R-PE标记的抗体特异性保持完好，且荧光强度高，还可配伍成双标试剂。

Only one parameter is introduced to describe the plasticization effect, and it can be easily estimated by thermodynamic theory about the glass transition temperature depression.

对橡胶态适用的自由体积参数在此模型中保持有效，所引入的表达溶剂可塑化效应的唯一参数β可以通过计算玻璃化温度来确定。

Compared with ATBC, PBA is more effective to plasticize PLA when the plasticizer content is higher than 20wt%.

PBA增塑的PLA体系的断裂伸长率可达到600%以上，并且能够保持23.7MPa的拉伸强度。

The white of the white, you can have light and thin, and white, white porcelain white, you want to show a sense of the Zodiac, and the Jade porcelaneous, such as some shadow of azure blue, and white glaze porcelain surface such as monochrome 2、smooth, to reproduce this kind of sense of reality, scan setting should remain dark hihglights area.

白纸的白，可处理得轻薄些；而白玉、白瓷的白，则要表现出玉质感和瓷质感，如一些影青、天青和白釉等单色瓷器表面光洁细腻，要再现出此种质感，扫描设定时，应保持高光区的青灰色层次。

The transparency principle is one of WTO's basic principles, and it plays an important role in maintaining predictability and stability of world trade.

透明度原则是WTO的基本原则之一，它在保持国际贸易的可预见性和稳定性中发挥着重要的作用。

This restriction remains in force until he has reached his turn to perform a move other than to win or to pung with any further identical pai exposed.

若一人可因一张打出的牌而宣报胡牌或碰牌但却保持箴默和不作相应的宣报，则在别人再显露相同的牌时他将不获准取得该牌而宣报胡牌或碰牌。这项限制将维持有效，直到他执行了一项别的行动为止。

But there are a number of incremental steps Iran can take that would rattle those who depend on affordable energy without sinking its own economy.

但伊朗可以采取许多渐进的步骤，让那些依靠价格可承受能源的国家惶惶不安，而保持自己的经济不至直线下滑。

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。