难解

Most phosphate rock can be resolved by the PSB, and it hence provides bioavailable phosphorus for plant.

一些接种试验表明，如果条件适宜，解磷细菌可以分解许多难溶性的磷酸盐，为植物提供有效的磷素营养。

The photoelasticity experiment was made to get the pressure distribution, and its results were loaded as the boundary conditions in finite element analysis to calculate the stress field of flat extrusion chamber.

针对扁挤压筒内应力的解析法求解非常困难，且很难有精确理论解的特点，用光弹性实验方法确定挤压力的作用方式，以此作为有限元计算的边界条件，对扁挤压筒内部应力场进行分析计算。

It has been proved that the grid job scheduling is a NP-complete problem, and it is hard to find an optimal solution in polynomial time by using traditional searching method.

已有文献证明，由于网格的复杂多变和任务的层出不穷，网格中的任务调度属于NP完全问题，很难用传统的搜索办法在多项式时间内找到最优解。

With the conclusion of a burst activity, the lactic acid level is high in the body fluids, leaving the large animal vulnerable to attack until the acid is reconverted, via oxidative metabolism, by the liver into 杨鹏 GRE 阅读难句精解 6 glucose, which is then sent back to the muscles for glycogen resynthesis.

4+ 随着爆发出来的运动的结束，再体液中乳酸含量会变得很高，使得大型动物处于容易受到攻击的状态，直到乳酸通过有氧新陈代谢，被肝脏转化成葡萄糖，而葡萄糖接下来又会传送回肌肉中重新合成糖原。

Because of the development of chemical fabric, rising of artificial technology and making progress of technology, which are the reasons of making a amount of the difficult biochemistry degrade of PVA serosity, artificial silk alkali solve matter and new-type auxiliary thing to enter into dyeing wastewater in recent years, and COD rises 2000-3000mg/L.

近年来由于化学纤维织物的发展，仿真丝的兴起和印染后整理技术的进步，使PVA浆料、人造丝碱解物、新型助剂等难生化降解有机物大量进入印染废水，使COD浓度从原来的数百毫克每升上升到2000-3000mg/L，从而使原有生物处理系统COD去除率从70%下降到50%左右，甚至更低，传统的生物处理工艺受到严重挑战，作为纺织品的生产，其生产过程关系到人们生活的大环境。

The perfect cleavage of spodumene makes it considerably more difficult to facet, and a little more care is necessary to prevent damage when wearing a spodumene gem set in a ring.

锂辉石的解理完全，因容易裂阙，很难加以切割。但也正因如此，佩带一些锂辉石的戒指不易遭受一些损坏。锂辉石通常适合做一些吊咀、胸针和耳环。

After division, they uncoil and may be difficult to see, the long narrow threads of uncoiled DNA being only about 2nm in diameter.

分裂完成后，染色体解螺旋因而在光学显微镜下很难观察到。解开的线状 DNA 直径可以达到2nm 。

To obtain the analytical solution of random response of the structure excited by uniform modulation model is very difficult in general.

均匀调制模型作用的结构随机响应很难给出解析解。

Analytical results showed that the upper clear liquid of pyrolysis oils was mainly consisted of water-soluble substances,such as phenol,cresol,xylenol,sugars,hydantoins,morpholines,pyranones and pyridine derivatives compounds,etc.,while the lower sediment was mainly insoluble or hardly water-soluble substances,such as the big substituent phenolics(the number of substituent carbon atoms of which is greater than or equal to 2),aryl phosphate esters,fatty acid esters and nitrile compounds,and so on.

研究表明，热解油上层清液主要是一些较易溶于水的物质，如苯酚、甲酚、二甲酚、糖类、乙内酰脲类、吗啉类、吡喃酮类和吡啶类化合物等；而下层沉淀则主要为不溶或难溶于水的物质，如大取代基酚类（取代基碳原子数≥2）、磷酸三芳基酯类、脂肪酸酯类和腈类化合物等。

The value-oriented education is ambiguous, The moral curriculum is hard to be put into pructice, The acher professional ethics need to be rebuilt, and the definition of teacher-student relationship is inexplicit.

当前后现代文化摧残理性与科学之后，自我中心主义盛行，伦理价值标准匮乏，理性思维解构冲突，以致造成校园伦理事件层出不穷、价值导向教育混淆不清、道德课程教学窒碍难行、教师专业伦理有待建立，及师生关系内涵定位不明。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。