It reports that n-butyl ether can be prepared in microscale experiment with a microscale distillation head.

用微型蒸馏头替代常量分水器来制备正丁醚，既能满足分析要求，又能节省实验经费。

youdao

Ole missis she'd take an 'tar DE head off 'n me.' Deed she would.

老太太她会把我的头给拧下来的，她真的会的！

youdao

Mr N suddenly showed a smile, putting up his hand to rub his head, and saying loudly.

忽然现出笑容，伸手在自己头上一摸，高声说。

youdao

In April,nineteen fifty-one, President Truman replaced MacArthur as head of the U.N.forces in Korea.

VOA: special.2009.05.24

Manuel Bessler, head of the U.N.'s Office for Coordinating Humanitarian Affairs in Pakistan, tells VOA that many civilians have fled the area.

VOA: standard.2009.10.17

Pachauri has ruled out stepping down as head of the U.N.panel.

VOA: standard.2010.01.23

Its revival holds self-help lessons that can be applied elsewhere -- and not just in the U.S.: n As head of the Littleton Industrial Development Corp.

FORBES: Local heroes

The bright spot in all this is that local businesspeople have found creative ways to come up with jobs, support for education -- and a fresh outlook on economic opportunity: n As head of the Littleton Industrial Development Corp.

FORBES: Local heroes

Reviewing the statement is crucial, especially in periods with big market swings, says Douglas Lyons of Trident Wealth Advisors in Bay Head, N.

WSJ: Investment-Policy Statements: Good Practice for Investors and Advisers