查询词典 acid ratio

In details, the strongest inhabitation to the shoot growth was observed when neutral soluble fractionates were supplied. The shoot biomass with neutral soluble fractionates added was decreased by 10.52% over the blank control, resulting in obvious increase of root: shoot ratio. It suggests that the root exudates would be self-poisonous. Besides, both acid and alkaline soluble fractionates exhibited the trend to increase the stem height and it is necessary to exploit the reasons.

在培养液中，分别加入分组的烤烟根系分泌物，均显著降低根系对NO_3~-、H_2PO_4~-、K~+离子的吸收和根系活力，推测根系分泌物中产生抑制作用的物质可作用在相当宽的pH范围；其中，碱溶性组分对H_2PO_4~-、酸溶性组分对K~+、中性组分对NO_3的吸收和根系活力的抑制作用较强，推测在烤烟根系分泌物中，可能存在多种抑制烤烟生K和养分吸收的化学物质；另外，抑制作用随着根系分泌物浓度的增加而增强。

The changes of nitrogen content, free amino acid, C/N ratio and chlorophyll content of wheat in wheat-faba bean intercropping system were studied by pot experiment with 3 N levels 0, 75 and 150 mg Nkg^(-1 soil. The results showed that leaf nitrogen content of intercropped wheat was higher than that of monocultured wheat at 3N level at tilling and booting stages, but was lower at heading stages.

为了解小麦蚕豆间作系统中小麦氮同化物的变化特征，探讨小麦蚕豆间作提高作物抗病性的可能机制，通过盆栽试验的方法，研究了小麦植株全氮含量、叶片游离氨基酸、叶片C/N比和叶绿素含量的动态变化及供氮水平对其的影响。

When the amount of sulfuric acid 1 t/t, the antionxidant (CH8O) capacity of 0.01 t/t and liquid-solid ratio at 4:1, the copper lixiviated efficiency is 94% with 250 r/min and stiring from 3 h at the nomal temperature.

调节浸出液pH为3.7~4.0后，利用固砷剂除砷固砷，砷去除率为98.54%，此时铜的损失为1.34%，除砷后的浸出液制成硫酸铜产品，铜的总收率在85%以上。

Intensified marinating method was put forward in paper that fertilizer was marinated in 80℃, 1∶20 ratio 2% hydrochloric acid solution and mixed round the upper solution at the same time.

文中提出了&强化浸泡法&，即以80℃、1∶20的2%盐酸溶液浸泡肥料，并用搅拌器以150 r/min的速度搅拌上层溶液。

Taking probiotic beverages as the carrier, related experiments were done on the following steps: screening out the best source collagen , figuring out the best working ratio of stabilizer in mixed solution, and confirming the effect on taste when titrating acid in finished products.

以益生菌饮料为载体，对胶原蛋白原料的筛选、稳定剂的复配比例、成品滴定酸度对口感的影响等进行了试验，确定了最佳工艺操作要点、产品配方及质量标准。

The reaction was carried out under the ratio of ramie to acetic anhydride and acetic acid of 1∶2.5∶4 at 60℃for 1 h.

通过FT-IR、SEM、纯水通量等手段考察了不同种类增塑剂对醋酸纤维素的影响。

It was found that the content of γ-amino butyric acid in brown rice reached the maximum value after soaking for 4 hours at the ratio of brown rice and sodium glutamate 1 200 g/mol, and under the soaking!conditions of pH 5~6, Ca~ 2+ Conceutritio...

发现糙米在浸泡温度40~50℃，Ca2+浓度为0.5mmol/L，pH值为5~6，糙米与谷氨酸钠的比值为1200g/mol的浸泡液中浸泡4h后，其γ-氨基丁酸含量分别达最高。

The results show that the calibration model established with firstderivative preprocessing spectra was the best, 18 samples of tested set were predicted with this model, the relative standard errors for the prediction of ami no nitrogen, total acid, salt content and color ratio were 1.516%, 1.811%, 1.798% and 1.893%, respectively.

结果表明，采用一阶导数预处理光谱建立的数学校正模型能得到最佳的预测效果，在对预测集18个样本中的氨基酸态氮、总酸、食盐的含量和色度进行预测时，所得的预测集相对标准偏差分别为1516%， 1811%， 1798%， 1893%。

Are compared with those of national standard of MAP, the results show that the process is completely acceptable, however the proper ratio between phosphoric acid and the sludge should be paid attention.

摘 要］讨论综合利用磷酸淤浆生产MAP的可能性，介绍宏福磷矿生产的含淤浆磷酸，用其生产MAP的组成理论值和实验值，与MAP国标对比，说明利用含淤浆磷酸生产MAP完全可能。

After the studies of basic material, citric acid/sodium carbonate, OBSH and Azodicarbonamide were used as foam agents of starch, fiber reinforced starch and starch/PVA blends. The expansion ratio and foam frame of the foams was studied.

在基础材料研究基础上，采用柠檬酸／碳酸钠、OBSH和AC发泡剂对淀粉、纤维增强淀粉和淀粉／PVA共混体系进行了挤出发泡研究，并就体系的发泡倍率和泡孔结构进行了研究。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。