平均

A novel photocatalytic reactor, which can use sun light and graniform photocatalyst, was developed and evaluated. Hydraulics studies show that the actual mean residence time was approximately 1. 5 to 2 times greater than the theoretical mean residence time, which is of great advantage for degrading the pollutants in the reactor, and that the high reaction rate can be obtained by increasing the rotational speed.

设计了一种新型提升式圆盘多相光催化反应器(exalting round-platephotocatalytic reactor，ERPPR)，该反应器的主要特点是能够利用太阳光和粒状催化剂，通过对ERPPR水力学特性的研究发现，该反应器的实际平均水力停留时间约为理论平均停留时间的1.5到2倍，反应器内循环流量与提升桨转速成正比。

According to an determination Changli muscat grape sugar content of 17-18%, the average weight of a single grain of 5 grams, the average ear weight of 350 grams or so, a rate of 76% or more juice.

据有关部门测定，昌黎玫瑰香葡萄含糖量为17-18%，单粒平均重量为5克，果穗平均重量350克左右，出汁率达76%以上。

Average optical and average gray scale can be used to describe the differences between the groups.

平均光密度和平均灰度可用于各组间差异的描述。

For example, in the Virginia wheat cultivar evaluation tests conducted at five locations, the cultivars Massey and Pioneer Brand 2548 both averaged 4.7 tons/ha (Brann and Griffey, 1991). However, in the northern study location, the Pioneer cultivar averaged 6.2 tons/ha over three years compared with 5.5 tons/ha for the Massey cultivar.

比如，在弗吉尼亚五个地区做的小麦品种试验表明， Massey 和 Pioneer Brand 2548的平均产量均为4.7吨/公顷（ Brann 和 Griffey ，1991），但是在北部地区研究中， Pioneer 品种，平均产量在三年中均达到6.2吨/公顷， Massey 品种亦达到5.5吨/公顷。

The average loss of grain in calamitous floods is about 4 percent of gross grain yield of the whole country in that year and that in calamitous droughts is about 6 percent. These numbers can be employed as ground of standard for grain store.

重大水灾平均损粮约占当年全国粮食总产量的4%，重大旱灾平均损粮约占当年全国粮食总产量的6%，这个粮食损失量可为仓储标准提供依据。

In December, Guppy Multiple Moving Average short-term group is likely to run to long-term average of the top group.

去年12月，顾比复合移动平均线短期组有可能运行到长期的前组的平均水平。

The average age of benign cases was 36 years, and testicular swelling was found in 6 cases, 2 patients presented with testicular swelling and gynecomastia in 2 cases. The average age of malignant cases was 64 years, and all testicular swelling.

良性病例平均年龄为36岁，其中6例表现为单侧睾丸肿大，2例表现为单侧睾丸肿大伴双侧乳腺发育。4例恶性肿瘤病人平均年龄64岁，均表现为单侧睾丸肿大。

In Hangchow it has four generations each year and the time of its occurrence is well synchronized with that of the scale.

根据测定，隐斑瓢虫对日本松干蚧各虫态的捕食能力较强，一头成虫的日平均捕食量为：显露若虫13.33头，雌成虫4.27头，卵囊3.67个(每个卵囊内平均有卵265.5粒)，雄蛹28.27只；一头幼虫全期(或2—4龄和3—4龄)分别能捕食显露若虫39.20—105.56头，雌成虫40.80—47.79头，卵囊39.38—41.79个，雄蛹220.50只。

The revised Hargraves formula has the best result compared with Penman-Monteith formula, the average relative error is 6%, moreover, Hargaves method requiring the least data in calculating ETo, so this method has the high actual application value; The following are Radiation method and Blaney-Criddle method ; The worst is the Pan method, even after revised, the highest and average relative error is 36% and 10%, respectively. So, in this study, Penman-Monteith method, Radiation method, Blaney-Criddle method and Hargraves method are used except Pan method.

在这四种方法中，修正后的Hargraves方法与彭曼—蒙特斯方法的计算结果符合最好，其平均相对误差为6％，而Hargraves方法需要的气象数据只有计算时段的最高、最低温度，该方法具有较高的实际应用价值；辐射方法和布兰尼—克里德尔方法次之；蒸发皿方法最差，即使在修正后，E601型蒸发皿的最大误差也高达36％，平均为10％，所以在预报系统的研究设计中采用了除蒸发皿方法之外的四种方法。

The surface tension of correlation components was measured. The interfacial tension was calculated by harmonic or geometrical mean.

测定了相关组分的表面张力，用调和平均法或几何平均法计算了界面张力。

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％。