硫

In order to void sulphur corrosion of steel surface layer when it is heated,in addition to more requirement of material surface quality,this paper gives some measure that alkyne gas of producer is given a desulfidation process by controlling the atmosphere in the producer and that use the alkyne of low sulphur and without smoke as row material.

为避免加热时对钢表层的硫腐蚀，除对材料表面质量提出了进一步的要求外，还提出了采用可控气氛，对发生炉煤气进行脱硫处理及使用低硫无烟煤作发生炉煤气的原料等解决措施。

The Zijinshan copper-gold deposit is the high-sulphur epithermal deposit,which is characterized by both the high argillaceous alteration of dickite and alunite and the copper mineral association of enargite, digenite and covellite.

紫金山高硫浅成低温热液型铜金矿床以一套独具特色的由地开石、明矾石组成的高级泥质蚀变和由硫砷铜矿、蓝辉铜矿、铜蓝组成的铜矿物组合为特征。

It has been reported that sulfur can stimulate the metabolism of sulfur-containing compounds in crops and also be of importance in photosynthetic pigments synthesis, enzymic activities, protein anabolism and catabolism in plant.

已有的研究显示，硫素能促进作物体内含硫化合物的代谢，对植物体内光合色素的合成、酶活性及蛋白质的合成与代谢具有重要意义。

We have had the extensive studies on theα-acetyl-α-carbamoyl ketene--acetals and its further applications, for example, their adols condensations with aldehydes giveα-alkenoyl-α-carbamoyl ketene--acetals which can be utilized as the 1,5-bielectronic five-carbon components to react with various binucleophlilic species in a [5+1] annulation.

我们小组在以前的工作中对α-乙酰基-α-胺甲酰基二硫缩烯酮在合成中的应用进行了深入的研究，如与醛缩合生成α-烯酰基-α-胺甲酰基二硫缩烯酮，将其作为1，5-双亲电五碳合成子的[5+1]成环策略等。

Exposed argentite could be dissolved in thiourea acidified by sulphuric acid ,since native Ag is not dissolved in non-oxidizing inorganic acids , hydrochloric acid was used to dissolve the sphalerite and to soak out the argentite which was enveloped in sphalerite .

继以硫酸酸化的硫脲溶剂溶解裸露的辉银矿，然后根据自然银在非氧化性的无机酸中不溶的特性，采用盐酸溶解闪锌矿并浸

It can be indicated that the reaction of asphalt and sulfur affect the reaction of rubber and sulfur.

这可能是由于硫黄与沥青的反应影响了硫黄与橡胶的反应。

Result The degradation speeds of poison-to-death barnyard grass, dichlorvos and methyl parathion in CW were rapid, and they degraded over 50% in 24 h and about 90% in 72 h. The degradation speeds of poison-to-death barnyard grass, dichlorvos and methyl parathion in LC and DW were more rapid than that of others, but slower than that of them in CW. In DW, except the degradation rate of poison-to-death barnyard grass was over 50% in 72 h, the degradation speeds of other pesticides were all slow, the fenvalerate nearly was not degraded.

结果］CW条件下毒死稗、敌敌畏、甲基对硫磷降解速度较快，24 h降解50%以上，72 h降解90%左右；LC和DW条件下毒死稗、敌敌畏、甲基对硫磷的降解速度较其他几种农药快，但较在CW条件下降解慢；DW条件下除毒死稗72 h降解率超过50%外，其他几种农药降解较慢，氰戊菊酯几乎没有降解。

Each area was sprayed three times with the 70% Methionine Powder of 1000, 75% Chlorothalonil Powder of 600 times, 20% triadimefon of 1000 times, and 0.2 Baume Lime Sulphur of 5 times water.

每区设70%甲基硫菌灵1000倍、75%百菌清600倍、20%三哩酮1000倍、0.2波美度石硫合剂、清水对照5个处理，每个处理重复3次，喷药3次。

The treatments of 0.2 Baume Lime Sulphur and 70% Methionine Powder of 1000 are better than the common Chlorothalonil and triadimefon, with 76% upward on everage in prevention effect.

结果表明：用0.2波美度的石硫合剂或70%的甲基硫菌灵1000倍液防治九里香白粉病，效果均优于生产上惯用的三哩酮、百菌清，平均防效达76%以上。

The retarding effect of boracic acid on the sulphoaluminate was unstable, but the composite of boracic acid and accelerating admixture could improved the retarding effect and early strength, and the appropriate boracic acid could increase the later compressive strength of the cement.

结果表明，高效减水剂FDN与硫铝酸盐水泥相容性很好，减水效果明显；硼酸对硫铝酸盐水泥的缓凝效果不稳定，但通过复掺早强促凝组分能改善其缓凝效果和早期强度，且适量的硼酸能提高水泥浆的后期强度。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。