propelling pencil是什么意思

网络释义

用法例句

Due to only the acidity of gastric juice was considered for the determination of soluble elements in toys and pencils by the standard method, the simulant conditions for the determination of soluble elements As, Ba, Cd, Cr, Hg, Pb, Sb, Se were studied, which included not only the aciditiy of gastric juice but also the influence of saliva.

国内外标准中关于玩具、铅笔中可溶性有害元素砷、钡、镉、铬、汞、铅、锑、硒的测定只考虑了胃液酸度的影响这一不足,在充分考虑唾液、胃液两种介质的影响下,建立了新的模拟溶出条件,将改进后的方法用于检测玩具、铅笔中8种有害元素,测定结果更切合实际。

Simultaneous determination of eight hazard elements was studied in toys and pencils with microwave digestion and ICP-AES.

对微波消解-等离子发射光谱测定玩具、铅笔中As、Ba、Cd、Cr、Hg、Pb、Sb、Se八种有害元素的方法进行了系统研究,针对不同样品确定了不同的酸消解体系,并对微波消化条件和等离子体发射光谱的测定条件进行了优化选择。

Speciation methods of As,Sb,Se in toys and pencils were investigated,and measuring conditions were optimized.

对玩具、铅笔中可溶性砷、锑、硒的形态分析方法进行了研究,对原子荧光光谱法测定不同价态砷、锑、硒的方法进行了优化,建立了砷、锑、硒的原子荧光光谱形态分析方法。

There are some pencils in the pencil - box.

铅笔盒里有一些铅笔。

With my pencil, with my pencil,

用我的铅笔，用我的铅笔，

wood of a pencil cedar tree; used for making pencils.

铅笔柏木料，用于制铅笔。

Write with pencils, write with pencils.

用铅笔写字，用铅笔写字。

There are two pens and a pencil in my pencil-box.

我的铅笔盒里有两支钢笔和一根铅笔。

A stroke with or as if with a pencil.

一笔用铅笔或如同用铅笔一样画一下

One, two, three, three pencils.

一，二，三，三支铅笔。

My pencils are in my pencil-box.

我的笔在我的铅笔盒里。

I'd like a pen and red pencil.

一枝钢笔和一枝红铅笔。

Pen and pen-cil, ru-ler, book, ru-ler, book

钢笔和铅笔，直尺和书本。

A pen or a pencil is required.

需要一支钢笔或铅笔。

There are pens, pencils and books on the table.

桌子上有钢笔、铅笔和书。

A quick stroke, as with a pencil or brush.

潦草一笔匆忙的一笔，如用铅笔或画笔

drawings in ink, pencil, pastel, and crayon;

钢笔画、铅笔画、彩色粉笔画和蜡笔画；

She is putting her pencils in her pencil case.

她在把她的铅笔放到铅笔盒里。

For example , there are five pencils in the pencil-box.

例如：这支铅笔盒里有五支铅笔。

I'd like a red pencil and a pencil-sharpener.

我想买一支红色铅笔和一个铅笔刀。

To mark or color with or as if with a pencil.

用铅笔着色用或好像用铅笔写或着色