Then he heard a piercing scream echoing down the deep well, ending in a dull, dead thud.接着他听见深井里回响起一声刺耳的尖叫，然后是砰的一声闷响，再之后就什么也听不见了。She tripped and fell with a sickening thud...她绊了一下，重重地摔倒在地。The encyclopedia fell to the flo...
By converting the loft, they were able to have two extra bedrooms.把阁楼改造一下，他们就可以多出两间卧室。Bedrooms have again been created by partitioning a single larger room...通过将一间大屋用隔断断开的方法再隔出了几间卧室。Bedrooms are fitted with alarm pull co...
Sodium metaborate is a by - product from deoxidation of sodium borohydride.摘要偏硼酸钠是硼氢化钠的还原 副产物.It is resistant to borohydride reduction in alcoholic solvents.在醇溶剂中,它不能被硼氢化物还原.The hydrogenation of terpineol to dihydroterpi...
为保证操作人员的人身安全安装了桨叶保护罩。A blade guard is fitted to protect the operator.圆盘外有透明的防护罩,以免偶然在圆盘上弄上污点或线迹.A transparent cover is provided to protect the disc against accidental marking or smudging.你能使用防护罩防止那些地区的减压 吗 ?Can you use t...