The question of conflict of jurisdictions between courts and arbitral tribunals not merely constitutes a purely theoretical issue, but it also has significance in the legal practice. When many countries show allowance to arbitration and support its development to the greatest extent, few courts in China fail to tackle the relationships between arbitration and courts. By means of an analysis of possible conflict of the jur isdictions between courts and arbitral tribunals, this article pleas for a supportive attitude of courts with respect to arbitration, so as to reduce the impact of courts’ judicial supervision on the due arbitration proceeding. In-depth theoretical discussions will develop on the principle of “competence-competence” and its application in China, justifying the conclusion that the essence of this principle is to have disputes between parties in arbitration agreements solved within the arbitration system and thereby to respect the parties’ decision to submit to arbitration.

The oxidation of (W,Mo) powders has been investigated at 400, 500 and for 12.0 hours in air. It was shown that the low temperature oxidation resistance of (W,Mo) was worse than that of , and they showed great changes in mass, volume and colour. Especialy at , the amount of volume expansion of (W,Mo) was as high as about times and color changed from black to yellow after 4.0h with , , (W,Mo) and amorphous as main reaction products. The mass gain and oxidation rate were relatively slower at and than that at .