过量存在

A ion association complex (maximum absorbance at 550 nm) was formed after the reaction of I-3 and crystal violet to determine DO in water.

连云港金兆水务有限公司，江苏连云港 222005〖摘要〗在碘量法测定水中溶解氧的基础上，利用 I-3与结晶紫在聚乙烯醇存在下结合成电中性的离子缔合物，以碘酸钾为标准溶液，与过量碘化钾反应生成碘，加入结晶紫后在550 nm 处有最大吸收的原理测定水中溶解氧，优化了试验条件，考察了共存离子的干扰。

And by using steam ejector pump, the exergy loss of reducers can also be decreased. In this article, the models of reducers and steam ejector pump are established. According to the analysis of economic benefit, there is a critical point about the low-pressure steam extra-flow rate in their application.

通过分析蒸汽喷射式热泵与减温减压器的模型，本文从理论的角度提出了蒸汽喷射式热泵与减温减压器的选择存在着一个临界点，即低压蒸汽临界过量流量，并通过计算，给出了不同电热比价条件下，蒸汽喷射式热泵与减温减压器应用的临界点。

The average levels of lead in fresh milk products and preserved eggs exceed the National Limits, and higher levels in sea food and swine kidney product.

全国鲜奶和皮蛋铅含量平均值超过国家标准；水产品中软体类和猪肾的铅污染水平较高；我国成人，特别是2岁儿童膳食铅摄入量远远超过世界卫生组织规定的耐受摄入量。7种添加剂存在过量添加问题，危险性评估结果表明我国的食品添加剂卫生使用标准规定的限量是安全的。

Single component and multi\|component of iron system colloidal catalyst \Ali\|Bu\-3CH\-2CHCH\-2Cl\ were mixed by different ratios in hydrogenated gasoline medium at 25℃.This paper studied the relationship between the nonaqueous systematic electroconductivity and the concentration of catalyst components.In combination with Tyndall effect,polymerization experimental results,Ali\|Bu\-3 existed in associated state and dissociated into ionpair.The reaction between Ali\|Bu\-3 and Fenaph\-2 was the main reaction which formed colloidal core.Ali\|Bu\-3 reacted on CH\-2CHCH\-2Cl and Ali\|Bu\-2Cl was yielded which joined the formation of active center on the surface of colloidal core.The excessive Ali\|Bu\-3 was dissociated into ionpair which formed double electrode layer,and the double electrode layer kept the colloidal particles relatively stable.

研究了在25℃加氢汽油介质中，铁系胶体催化剂［Fenaph2Ali-Bu3―CH2==CHCH2Cl］单组分、多组分按不同配比混合，非水体系电导率与浓度的关系，结合Tyndall效应，聚合实验结果，得出Ali-Bu3以缔合状态存在并解离成离子对它同环烷酸亚铁的作用是形成胶核的主要反应，与氯丙烯反应生成的氯化异丁基铝，在胶核表面参与形成活性中心由过量Ali-Bu3解离的离子对形成的双电层结构，使胶粒保持相对稳定。

The edge of Tarim basin of south Xinjiang is one of the most important cotton production regions in China.

塔里木盆地边缘绿洲是中国重要的棉花产区，不合理的灌溉制度和过量施氮是目前该地区高产棉区中普遍存在的问题。

The α-BaB〓O〓 crystal is colorless, transparent and without cracking. The cracking problem has been overcome by a special growth procedure. The dislocation density, crystallization morphology and growth habit of α-BaB〓O〓 crystal have been systematically studied by chemical etching method, X-ray laue orientation of synchrotron radiation, double-crystal diffraction topography. The growth striation and irregular dislocation consist of the primary defect in α-BaB〓O〓 crystal. The convex solid-liquid interface is stable during the whole growth process.

在国际上首次采用提拉法生长出φ50×40mm〓的α-BaB〓O〓晶体，生长方向为[0001]，晶体完整、无色透明；提出了三种固相反应的原料制备方法，并保证B〓O〓过量1mol%；采用独特的生长装置和程序有效地解决了α-BaB〓O〓晶体易开裂的问题；首先采用化学腐蚀法、白光X射线衍射术、X射线双晶衍射形貌术等研究了α-BaB〓O〓晶体的位错密度；首次采用同步辐射X射线劳埃定向术研究了α-BaB〓O〓晶体的结晶形态及生长习性；结果发现α-BaB〓O〓晶体的缺陷以位错为主，部分α-BaB〓O〓晶体中存在生长条纹。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。