幼虫的

Primitive marine animal having a saclike unsegmented body and a urochord conspicuous in the larva.

有囊状不分段形状身体的原始海洋动物，幼虫阶段有明显的脊索。

Silkworm cocoons are thrown into boiling water,which kills the larva and makes the cocoons easier to untwist.

把蚕茧扔进滚烫的水，烫死茧里的幼虫，同时也让抽丝变得容易。

The development of adult ovary and dissected supervision of it's matting status are one of evi dence as forcasting occurrence amount and time for young beet webworm.

成虫卵巢发育及交配状态的解剖监测是预测草地螟幼虫发生数量和时间的依据之一。

It iS inteesting to contemplate how successfullya white buttefly could ise white snow as a camouflagingbackgound,but it is difficult to imagine whee the butteflyo its young could discove a meal at such a time.

想想一只白色的蝴蝶能如此成功地利用白雪作为伪装的背景，也真是有趣。但很难想像在这么一个时节，蝴蝶或其幼虫到哪儿去觅食。

The method was found to be simple, rapid, precise and accurate. It was suitable for the determination of fatty acids in worker bee larvae and honeybee pupae.

该方法简便、快速，且有较好的精密度和重复性、可靠性，适用于工蜂幼虫和蛹中脂肪酸的测定。

The larvae are about 5-8 mm long at hatching and have a large yolk sac.

幼虫约5-8毫米长的孵化有一个较大的卵黄囊。

Collembola and Acarina were the dominant group, accounting for 45.82% and 25.72% of total capture, respectively. The common group was Coleoptera, Isopoda, Oligachaeta, Diptera, Gastropoda, Orthoptera and Coleoptera larvae, accounting for 5.63%, 5.01%, 4.32%, 3.10%, 2.36%, 2.32% and 1.59%, respectively. The rest was rare group.

其中，弹尾目和蜱满目为优势类群，分别占总捕获量的45.82%和25.72%；鞘翅目、等足目、寡毛纲、双翅目、腹足纲、直翅目和鞘翅目幼虫为常见种类，分别占全捕量的5.6%、5.01%、4.32%、3.10%、2.36%、2.32%和1.59%；其余类群为稀有种类。

Methods Water containers or receptacles where Aedes larva breeded in different environments were detected in 2004 and 2005 in Guangzhou.

目的 掌握自然种群白纹伊蚊幼虫在广州地区的孳生分布特点，为白纹伊蚊自然种群变动的监测与控制提供依据。

In order to understand the mechanism of the insecticidal fraction F3-28 from the extract of Periploca sepium bark. The effect of F3-28 on the activities of protease, trypsin-like, chymotrypsin-like, lipase and amylase of the 5th larvae of Mythimna separata and Agrotis ypsilon were studied.

为了研究杠柳根皮中主要杀虫活性成分F3-28的作用机理，以载毒叶碟法饲喂小地老虎和东方粘虫5龄幼虫，分析试虫中肠摄食F3-28后蛋白酶、类胰蛋白酶、类胰凝乳蛋白酶、淀粉酶、脂肪酶的活性变化。

Among them, fungi of Hyphomycetales were dominant. The pathogenicity test of Beauveria amorpha and Verticillium indicum to larvaes of Cerura menciana and Parnops glasunowi were tested. The average pathogenical effect of Beauveria amorpha c...

选取其中的多形白僵菌和印度轮枝菌，分别对林业害虫杨二尾舟蛾、杨梢叶甲幼虫进行杀虫活性试验，多形白僵菌的平均杀虫效果高于印度轮枝菌 16 。4 %。

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。