| 1. | Eggs that reach fresh water hatch into ciliated miracidia .
虫卵进入淡水，孵化成毛蚴。 |
| 2. | Sprays should be timed to coincide with the end of egg hatching .
要掌握好喷射时间适好在卵孵化的末期。 |
| 3. | Such an area should be sealed off from the poultry pens or hatchery .
这些地方同鸡舍或孵化室之间应完全隔绝。 |
| 4. | Under proper conditions of humidity, they hatch in approximately 1 month .
在固有的温度条件下，虫卵约在一个月内孵化。 |
| 5. | Many old poultry buildings, hatcheries, and feed mills can be redesigned .
许多老的禽舍，孵化室和饲料磨坊可以重新设计。 |
| 6. | This is especially important when there is a history of insect borne disease in the previous brood .
这在前一次孵化中发生过虫煤疾病的尤其重要。 |
| 7. | He was unable to prove conclusively how passage through the worm affected hatchability of cysts .
他未能结论性的证明为何经过蚯蚓则影响到胞囊的孵化力。 |
| 8. | in stagnant shallow water at 26℃, hatching occurs in 14 to 18 day to form the miracidium.
在26的积滞的浅水中，14-18天孵化出毛蚴。 |
| 9. | The prevailing conditions in activated sludge may even promote the hatching of some helminth eggs .
在活性污泥中，适宜的条件甚至可能刺激一些蠕虫卵的孵化。 |
| 10. | Suber flushes early and pupas are already found at a time when the caterpillars on ilex are just hatching .
栓皮栎发叶早，当常绿树上的幼菌虫还处在孵化阶段时，栓皮栎上的已成了蛹。 |
