| 1. | This lignification serves to stiffen and strengthen the cells .
木质化足以使细胞变硬和增强。 |
| 2. | Sapwood contains xylem vessels, but not as strong as heartwood .
边材含有木质导管，但不如中心木质那样坚硬。 |
| 3. | When the aggregates reached a certain size the inner cells became lignified .
当这些聚体达到一定体积时，内部的细胞变成木质化。 |
| 4. | The exposed wood protected with a wound-dressing compound to prevent fungal infection .
伤口露出的木质应以敷料包裹以防止病菌侵染。 |
| 5. | In the early 1920's, the battery industry's first "non wood" separator appeared .
早在本世纪二十年代，蓄电池工业用的首批“非木质”隔板就出现了。 |
| 6. | In the early 1920's, the battery industry's first "non wood" separators appeared .
早在本世纪二十年代，蓄电池工业用的首批“非木质”隔板就出现了。 |
| 7. | Negative expander formulas started to include such items of wood, as wood dust or wood flour .
负极板膨胀剂配方开始包括木质一类的材料，如木屑或木粉。 |
| 8. | At 4 pounds per square inch overpressure the damage to a loaded wooden boxcar was more severe .
在每平方4磅的超压作用下，装有货物的木质车厢受到较严重的损坏。 |
| 9. | The lab was furnished with two worn wooden benches, set close together to make the most of available space .
实验室里有两张破旧的木质工作台，为充分利用空间，靠得很近。 |
| 10. | An unacceptable amount of time and effort is devoted to replacing wooden structures such as homes and bridges .
人们为了修补木质建筑物，如房屋和桥梁，要花费难以忍受的时间和精力。 |
