物物交换

Through ethanol deposition, organic solvent extraction, then active carbon, 732 positive ion-exchange resin and silica gel columniation chromatography, cream nematocide substance have been obtained. Inspection the substance by TLC, UV-Visible Spectrophotometer have been deduced singleness component, and it's pure 97.38% by HPLC. The substance could use for structure analysis and character identify.

活性物通过无水乙醇沉淀，有机溶剂萃取，活性炭柱、732型阳离子交换树脂柱及硅胶柱层析后，经硅胶薄层层析、紫外－可见光检测和高效液相色谱检测，其纯度达97.38%，可用于物质进一步结构分析及性质测定。

And as different degrees of industry were apt to give men possessions in different proportions, so this invention of money gave them the opportunity to continue and enlarge them: for supposing an island, separate from all possible commerce with the rest of the world, wherein there were but an hundred families, but there were sheep, horses and cows, with other useful animals, wholesome fruits, and land enough for corn for a hundred thousand times as many, but nothing in the island, either because of its commonness, or perishableness, fit to supply the place of money; what reason could any one have there to enlarge his possessions beyond the use of his family, and a plentiful supply to its consumption, either in what their own industry produced, or they could barter for like perishable, useful commodities, with others?

就像不同程度的勤劳会给人们不同数量的财产，货币的发明也给予了他们机会去保存和扩大货币。想象有这么一个岛屿，与世界其它地方的贸易完全隔绝，在那里只有一百户家庭，但是有绵羊，马和奶牛，和其它一些有用的兽禽和有益健康的果实，以及足够生产十万倍谷物的土地，可是，由于这些物品不是太过普遍就是易于腐烂，岛上竟没有一样东西适合做货币；在这种情况下，那里的任何人在超过他的家庭所需，以及通过自身的劳动生产或与他人物物交换一些类似的易腐的有用的日用品之外又有什么理性去扩充他的财产呢？

The somatic hybrids usually showed specific bands and combined all the bands of both parents. In combinations, some new bands were detected, and occasionally specific bands of parents were lost, which indicated that chromosome recombination and exchange happened after fusion. Additionally, in some combinations, specific bands from leaf parent were detected, which revealed the plants were of putative hybrid origin, because leaf protoplast cannot redifferentiate by both single culture and co-culture.

体细胞杂种一般表现为具有双亲的特征带，且综合双亲的所有带，但在部分杂种中检测到了双亲都没有的新带，也发现有丢失亲本的特征带或共有带的现象，说明融合后染色体发生了重组和交换；有的引物只检测到叶肉亲本的特征带，根据柑橘叶肉细胞无论单独培养还是共培养均不能再生的事实，可推测其为体细胞杂种或二倍体叶肉亲本型胞质杂种。

Comparison of the results with those from non-grass type zone in Lake Taihu illustrates that the presence of aquatic macrophytes played some roles in reducing the release of nutrients during the sediment resuspension process.

与太湖无植被湖区的研究结果对比说明，水生植物的存在对风浪作用下沉积物与上覆水的物质交换有一定的抑制作用。

Occasionally, customs agents accepted large tips from Teabing in exchange for turning a blind eye to the transport of harmless organics—mostly luxury foods—French escargots, a particularly ripe unprocessed Roquefort, certain fruits.

这里的海关工作人员不时会从提彬那里得到大笔的小费，作为交换，他们对他从外地运来的无害有机化学物——其中多半是些奢侈食品，如法国食用蜗牛，特别是宜于食用但尚未加工的羊乳干酪，还有一些水果——睁一只眼闭一只眼。

It shows that the average thickness of the surface layer of crystals,the palisade and cone layer and the eggshell membrane are 20.8,220.8 and 62.5μm,respectively,which accounting for 6.8%,72.6% and 20.6% of the total thickness of the eggshell.There are many vesicular holes in palisade layer with an average diameter of(0.32±0.08)μm(n=30).The function of such holes may be of significant to air exchange.The shape of eggshell pore on the surface layer of crystals is round or ellipsis.The fracture surface of the pore is funnel-shaped.

结果表明：白冠长尾雉卵壳的表面晶体层、栅栏锥体层和壳膜层的厚度分别为20.8，220.8和62.5μm，分别占卵壳总厚度的6.8%，72.6%和20.6%；栅栏层有很多蜂窝小孔，其直径为(0.32±0.08)μm(n=30)；卵壳表面有许多圆形或椭圆形的气孔，可能与胚胎发育过程中的气体交换有关，气孔横断面呈细漏斗状，在其上半部有颗粒状填充物。

Adsorption, ion exchange, and chromatography are sorption processes in which certain adsorbates are selectively transferred from the fluid phase to the surface of insoluble, rigid particles suspended in a vessel or packed in a column.

吸附法、离子交换色谱吸附过程，并在一定的吸附物是选择性的转移到表面的流体相溶，刚性悬在船舶或装在一个专栏。

All the chelators are labeled with technetium-99m and further tested for the biological activity in mice.

采用葡庚糖酸钙交换法对 4个配体进行了99Tcm 标记，研究了配合物在小鼠体内的生物分布特征。

P hydroxybenzoic acid ; oligomer ; PET ; transesterification ; block copolymer

对羟基苯甲酸；齐聚物；聚对苯二甲酸乙二醇酯；酯交换反应；嵌段共聚酯

The Tatun Coal Electricity Company Gangue Thermal power plant boiler supplies aqueous system used traditional the preparation craft, the processing water source was the ground water ahead of time, namely carries on the pretreatment elimination water through the mechanical filter the suspension, the colloid, the organic matter and so on, through the ionic exchange technology except the dehydration in salty ion, its craft approximately is again as follows

大屯煤电公司矸石热电厂锅炉补给水系统先期采用传统的制备工艺，处理水源为地下水，即通过机械过滤器进行预处理去除水中的悬浮物、胶体、有机物等，再通过离子交换技术除去水中的盐离子，其工艺大致如下

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。