产生的

The results sh~wed that there were significant differences between sexual forms and parthenogenetic forms of cotton aphid with characteristic bands appeared.

棉蚜性蚜人工诱导的试验结果表明：14C和 18'C下能诱导性蚜产生，而 22℃下诱导则不产生性蚜，可以估计棉蚜性蚜产生的临界温度约为 20'C左右。14℃、18℃下随光照时间的缩短棉蚜性蚜比例有提高的趋势。

An apparatus for balancing and centering a disk comprising a sensor that produces a signal indicative of the disk's deviation from a desired dimension and a movable reference surface that moves the disk in response to the signal from the sensor.

一种用于平衡并对中磁盘的装置，该装置包括产生一种信号的传感器，该信号表示磁盘与理想尺寸的偏差，该装置还包括一移动式基准面，该移动式基准面响应于传感器产生的信号，对磁盘进行移动。

People pay little attention to dyanic system In order to make more people understand dyanic deontic system, firstly I have introduced the history of dyanic system as intensively as possibe .

为此 ，本文首先对二元道义系统产生的一些情况进行考察，分析其产生的原因，接着对主要的道义系统进行了详尽的剖析，指出其优缺点。

Through purification, 17 different products by 14 strains were identified, of which 11α-OH-17-oxo-homo-AD was first reported. 28 endophytes producing useful intermediates were identified by traditional morphological taxonomy.

从其中14株的4AD转化产物中分离得到17种不同的转化产物，并逐一进行了产物鉴定；其中11α-OH-17-oxo-homo-AD的产生未见有微生物转化产生的报道。

The pressures produced by these species are generated throughout the stem, but can co-occur with some degree of root pressure Ewers et al. 2001, Sperry et al.

压力产生的，这些物种所产生的整个干的，但可以一起合作，出现某种程度的根压（ ewers等， 2001 年， sperry等人1988 年年）。

"The other main reason for the better greenhouse performance of grain-fed beef is the superior digestibility of the feed and the associated reduction in methane emissions, and these digestion-related methane emissions are the main source of greenhouse gas from the livestock industry."

&另一个谷物饲粮为什么会有较低温室效应的原因就是，谷物饲粮有很高的消化率，并因此而减少甲烷释放量，而这种消化产生的甲烷释放量是畜牧业产生温室气体的主要来源。&

Microbial biomass carbon and microbial biomass nitrogen, respiration CO2 and mineralized nitrogen in plant straw fertilized soil were determined under laboratory incubation conditions of constant temperature and moisture based on field above- ground yields of intercropped sweet maize straw and white clover straw.

根据田间甜玉米／白三叶草套种各作物的秸秆产量，在恒温恒湿条件下进行室内培养，探讨秸秆不同方式还田后土壤微生物量碳、微生物量氮、呼吸产生的CO2和矿化产生的无机氮的变化规律。

The excitation sources of vibration in a in-line 4-cylinder engine include second-order inertia force induced by piston reciprocating movement and rolling moment caused by the side force exerted on cylinder.

四缸发动机的主要激振源为活塞往复运动产生的往复惯性力和气缸承受的侧压力产生的倾覆力矩。

Following from this and considering the work of Kays (2003) and the relationship between emergence theory and instructional design, we face the potential of learning outcomes emerging from learning environments over which the instructional designer has no control—and the factors that govern the emergence of such occurrences are complex and uncertain.

根据以上论述，并考虑到 Kays （2003）的研究以及涌现理论与教学设计之间的关系，我们面临着学习成果从教学设计者并未控制的学习环境中产生出来这种可能，而影响这些情况产生的因素却非常复杂而且不确定。

Even if wheels, by some lucky combination of circumstances, do not wear significantly, reprofiling to remove work-hardened metal is likely to be needed at around 1 million km, otherwise Martensite fragments can drop out of the wheel tread, leading to the type of damage shown in the photo above.

即使车轮没有明显的磨损，行驶每百万千米也需要去除车轮面上的硬化金属，否则马式碎片会从踏面上剥离，产生上图所示的损伤，这种损伤也可以由滑动或制动时产生的局部过热造成。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。