The taxi drivers' association is urging its members, who can work as many hours as they want, not to overdo it.出租车司机协会劝告那些工作时长不受限制的会员不要疲劳驾驶。You do need a staff - so long as you don't overdo it.办事人员确实是需要的,只是不能搞得...
In contrast , densimeter while drilling can overcome those defects by getting continuous and objective data.而随钻密度仪则能够有效地克服以上缺陷,其数据连续可靠,客观性也非常强.Reliability is poor and precision is not high while using traditional differe...