The biosynthesis of spiramycin ( SPM) by streptomyces spiramyceticus sp.799 was regulated by carbon and nitrogen catabolite repression as well as end products feedback repression.

Adding inorganic nitrogen source such as NH4Cl 、( NH4) 2SO4 to culture medium, increase glucose concentration and Carbon Catabolite Repression and have no benefit to riboflavin production.

NH4Cl、（NH4）2SO4等无机氮源用作2.5%酵母粉的补充氮源，都能够促进发酵液中葡萄糖浓度增高，引起碳分解代谢阻遏效应，不利于核黄素合成。

Something of dissolvable substance has no advantage for riboflavin production in yeast powder because it can induce Carbon Catabolite Repression and overflow metabolic.

酵母粉中某些可溶性组分的过量存在，引起碳分解代谢阻遏作用和溢流代谢，降低核黄素合成速率和产量。

Purification and properties of α-galactosidase from a catabolite repression insensitive mutant of Bacillus stearothermophilus

嗜热脂肪芽孢杆菌中一株对分解代谢物不敏感突变型的α-半乳糖苷酶的纯化及其性质

PG belonged to an inductive enzyme and was inhibited by glucose through catabolite repression.

PG是诱导酶，被葡萄糖阻遏抑制。

Catabolite repression is considered as a main factor controlling yield of cellulases.

降解物阻遏是菌株控制其产酶量的主要调节机制。

A century ago the overwhelming majority of Britons supported the government's argument that the German violation of Belgian neutrality was a legitimate casus belli-including my grandfather, who rushed to enlist.

一个世纪以前，英国政府认为德国侵犯比利时的中立性是一个合理的开战理由，支持政府的英国人占压倒性多数。其中也包括我的祖父，他当时立刻应征入伍。

He was, in fact, on the verge of war with the pope, the casus belli being the revolt of Paul II's grandsons against the new pope.

他，事实上，在战争的边缘与教宗，宣战正在反感保罗二世的孙子对新教皇。

A country discovering a successfull assassination, supporting rebels or desecration of holy site now gets a casus belli against the offender.

某国如果在暗杀，支持叛乱分子或者玷污圣地的时候被发现，敌国会拥有宣战理由。

But to our mind his casus belli still stands, despite the failure so far to find weapons of mass destruction.

尽管没有找到大规模杀伤性武器，但是我们还是认为他的宣战原因成立。

A trade war is brewing over solar panels but the casus belli looks shaky.

一场围绕太阳能面板的贸易战正在酝酿中，但开战的理由看起来却站不住脚。

They seem to be using these incidents as a casus belli.

他们似乎是在把这些事件当作宣战的借口。

Market Prediction of Auto Aluminium Castings

汽车铝铸件的市场发展

Study on the Low-pressure Die Casting's Technique with the Electromagnetic Pump for Aluminium Castings

铝铸件用电磁泵低压铸造工艺研究

High Strength Aluminium Castings for Military Usage

军用铝合金优质铸件整体铸造技术

New development and applications of chemical-bonded sand moulding to high quality aluminium castings

化学粘结砂造型技术在高质量铝铸造领域的发展及应用

The influence of Wall Thickness on the Mechanical Properties of Aluminium Castings

铝合金铸件壁厚对机械性能的影响

Factors Influencing the Surface Roughness of Cold-setting Resin Sand Aluminium Castings

冷硬树脂砂铝铸件表面粗糙度影响因素的研究

Several Technological Problems about Low Pressure Cast with Metal Mould for Large Aluminium Castings

金属型低压铸造大型铝铸件的几个工艺问题

The results show chill crystal zone of castings is formed when the solidifying interface captures a large amount and in a continuous way the high density floating crys-tals.

结果表明，铸件激冷晶区是在凝固界面对密度很大的游离晶连续、大量捕获时形成的。

Study on the External Chill of Large Steel Castings

大型铸钢件外冷铁的研究