During the Tokyo round, considerable progress was made in the area of customs valuation for duty.

The Customs valuation of and outward articles shall be determined by the Customs according to law.

进出境物品的完税价格,由海关依法确定.

It is the key question of administrative litigation of customs valuation.

它是海关估价行政诉讼的核心问题.

With the asphaltene precipitation, the rock permeability reduces correspondingly.

随着沥青质的沉积，岩石渗透率也相应的降低。

Prevention of Asphaltene Deposition in Light Oil Production Wells in District 8 of Tahe Oil Field

塔河油田八区轻质油井沥青质沉积的防治

The Effects of Stabilizers on Viscosity of Petroleum Asphaltene Solutions

稳定剂对石油沥青质体系粘度的影响

Evaluation of additives on prevent and remove asphaltene deposits

防治原油沥青质沉积处理剂的室内评价

However, the molecular sizes of asphaltene was about 2.39-2.79 nm calculated by density method.

采用密度法计算得到的沥青质分子颗粒直径为2.39~2.79nm。

Study on the Mechanism of Residue Heat Contact Upgrading ⅱ. Conversion of Resin and Asphaltene

渣油热接触改质反应机理&Ⅱ.胶质和沥青质的转化

The asphaltene deposition mechanism in oil reservoir

油藏中沥青质沉积机理研究

Study on asphaltene and resin of chloroform rock extracts and crude oils

生油岩氯仿抽提物及原油中沥青质和胶质的研究

So 300 ℃ is a relatively suitable asphaltene pyrolysis temperature for oil/ oil correlation.

因此，对于采用生物标志物恢复的方法来进行油/油对比时，300℃是沥青质热解实验较合适的温度。

Adsorption characteristics of asphaltene on silica sand and wettability by SEM

沥青在石英砂上吸附特征和润湿性的微观研究

Phase behavior and equilibrium in asphaltene precipitation process with antisolvent

抗溶剂沉淀沥青质过程相态及相平衡研究

Research of Asphaltene Plugging Mechanism in Porous Media

多孔介质中沥青堵塞机理

The processes of asphaltene adsorption and deposition and their effects on productivity;

原油沥青质吸附沉积过程及其对产能的影响；

Molecular size and micellar particle size of asphaltene in vacuum residues

渣油中沥青质分子颗粒尺寸及其胶粒模型研究

Asphaltene structure in reservoir affected by discharge of secondary condensate oil: laboratory simulation

凝析油充注对油藏沥青质分子结构的影响

Processing and Performance Evaluation of Paving Asphalt from High Asphaltene Tahe Crude Oil

高沥青质塔河原油制备道路沥青的工艺及性能评价

Mechanism and evaluation of formation damage induced by deposition and adsorption of crude asphaltene

原油沥青质沉积和吸附引起储层损害的机理及损害程度评价

Therefore, controlling the formation of asphaltene is important to asphalt aging resistance.

控制沥青质的生成对防止沥青老化有重要意义。